1991 GMC K2500 Fluids and Chemicals

Essential 1991 GMC K2500 Fluids and Chemicals

Yukon Gear – Friction Modifier / Posi Additive (Part No.15018)

Friction Modifier / Posi Additive

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$17.99
Help keep positraction chatter down with posi additive from Yukon Gear & Axle.

Product Features:
  • positraction additive
  • For use in any clutch-style limited slip
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Prestone – Power Steering Fluid: All Vehicles, Anti-Wear Protection, 50k miles, 32 oz. (Part No.AS261Y/1)

Power Steering Fluid: All Vehicles, Anti-Wear Protection, 50k miles, 32 oz.

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$9.99
Prestone® Power Steering Fluid (PSF) delivers increased system life. Designed with Anti-wear System Protection, Prestone PSF protects against pump failure, squeals and clogs. This 50,000 mile fluid life is formulated for use in all manufacturers; cars, SUVs, crossovers, and light and medium duty trucks. This a conventional fluid. Many cars 2006 and newer use synthetic based fluids for longer life and better protection. Conventional and synthetic fluids can be mixed but performance and replacement intervals are reduced by the conventional fluid.

Product Features:
  • 50,000 Mile Fluid Life
  • Anti-Wear Protection = Increased System Life. Protects against pump failure, squeals and clogs. Corrosion protection for metals, rubber & gasket components.
  • For use in all manufacturers
  • Conventional Formula – For use in all manufacturers
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Prestone – Power Steering Fluid: All Vehicles, With Stop Leak, Restores & Conditions Seals, 50k miles, 12 oz (Part No.AS262)

Power Steering Fluid: All Vehicles, With Stop Leak, Restores & Conditions Seals, 50k miles, 12 oz

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$6.99
Prestone® Power Steering Fluid + Stop Leak (PSF+SL) delivers increased system life and prevents & stops system leaks. Stop Leak additives renew, restore and condition seals in the power steering system. These seals harden and shrink over time which are the likely cause of leaks. The stop leak additives also prevent leaks by rejuvenating seals before they leak. Also designed with Anti-wear System Protection, Prestone PSF+SL protects against pump failure, squeals and clogs. This 50,000 mile fluid life is formulated for use in all manufacturers; cars, SUVs, crossovers, and light and medium duty trucks. This a conventional fluid. Many cars 2006 and newer use synthetic based fluids for longer life and better protection. Conventional and synthetic fluids can be mixed but performance and replacement intervals are reduced by the conventional fluid.

Product Features:
  • 50,000 Mile Fluid Life
  • Includes Stop Leak Additives to prevent and stop power steering system leaks.
  • Anti-Wear Protection = Increased System Life. Protects against pump failure, squeals and clogs. Corrosion protection for metals, rubber & gasket components.
  • Conventional Formula – For use in all manufacturers
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Prestone – MAX Power Steering Fluid: American Vehicles, With Stop Leak, Enhances System Life, 100k miles, 12 oz (Part No.AS277)

MAX Power Steering Fluid: American Vehicles, With Stop Leak, Enhances System Life, 100k miles, 12 oz

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$14.99
Prestone® MAX American Vehicles Power Steering Fluid (PSF) + Stop Leak maximizes and increases system life + the power to stop leaks. Stop Leak additives renew, restore and condition seals in the power steering system. These seals harden and shrink over time which are the likely cause of leaks. This formula is also great at preventing leaks by rejuvenating seals before they leak. This synthetic fluid is designed with 2X Anti-wear System Protection, which means more protection against pump failure, squeals and clogs. 100,000 mile fluid life, 2X more than conventional fluid, extends the time between replacement. This fluid is formulated for American vehicle manufacturers: Ford, Lincoln, Mercury, Dodge, Ram, Jeep, Chrysler, GMC, Chevrolet, Buick, Cadillac, Pontiac, Oldsmobile and others. Many cars 2006 and newer use synthetic based fluids for longer life and better protection. Conventional and synthetic fluids can be mixed but performance and replacement intervals are reduced by the conventional fluid.

Product Features:
  • 100,000 Mile Fluid Life. Synthetic Formula for longer life and more protection
  • MAX + Stop Leak. Stop Leak Additives to prevent and stop power steering system leaks.
  • For use in American vehicle manufacturers: Ford, Lincoln, Mercury, Dodge, Ram, Jeep, Chrysler, GMC, Chevrolet, Buick, Cadillac, Pontiac, Oldsmobile and other
  • 2X Anti-Wear Protection for enhanced System Life vs. conventional fluid. More protection against pump failure, squeals and clogs
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Mobil 1 – Full Synthetic Automatic Transmission Fluid, 1 Quart (Part No.25201)

Full Synthetic Automatic Transmission Fluid, 1 Quart

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$14.29
Mobil 1 Synthetic ATF is a multi-vehicle, fully synthetic automatic transmission fluid that helps to improve overall transmission durability and cleanliness. Has exceptional thermal and oxidation stability and long-term frictional properties that help to improve and extend transmission efficiency, smooth shifting performance, and fuel economy. Mobil 1 ATF provides excellent low-temperature fluidity to promote reliable lubrication at temperatures down to -51C, and exceptional shear stability to help supports viscosity retention under the most severe heavy-duty, high-temperature operating conditions. Compatibile with mineral ATF fluids and all common seal materials to help provide excelent leakage control and reduce concern in top-off emergencies. Meets or exceeds the requirements of JASO 1-A and Ford MERCON V.

Product Features:
  • Multi-vehicle, fully synthetic automatic transmission fluid that helps to improve overall transmission durability and cleanliness
  • Exceptional thermal and oxidation stability to improve and extend transmission efficiency, smooth shifting performance, and fuel economy
  • Excellent high and low-temperature fluidity to help support viscosity retention under extreme, heavy-duty operating conditions
  • Compatibile with mineral ATF fluids and all common seal materials to help provide excelent leakage control
  • Meets or exceeds the requirements of JASO 1-A and Ford MERCON V
  • Manufacturer Part Number: 112980
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Valvoline – DEXRON®-VI ATF Full Synthetic Automatic Transmission Fluid, 1 Gallon (Part No.883572)

DEXRON®-VI ATF Full Synthetic Automatic Transmission Fluid, 1 Gallon

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$38.49
Valvoline DEXRON-VI/MERCON LV ATF is a full-synthetic transmission fluid formulated with advanced additive technology to meet and exceed the requirements of the General Motors DEXRON-VI specification. It is officially licensed and approved by GM and is fully back-serviceable and can be used wherever DEXRON-II and/or DEXRON-III are recommended. Recommended for use in the following applications: DEXRON-VI, DEXRON-III, DEXRON-II, MERCON LV and Allison C-4.

Product Features:
  • Formulated with full-synthetic base stocks and advanced additive technology to meet the challenging demands of automatic transmissions
  • Enhanced anti-shudder protection for smooth shifting and maximum power transfer
  • Developed with anti-wear technology to help improve transmission durability
  • Engineered with a proprietary blend of base oils and advanced additives to provide better oil flow at low temperatures and greater film protection at higher temperatures
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ATP – Trans Fluid Additive (Part No.AT-202)

Trans Fluid Additive

from

$14.99
Product Features:
  • Reduces heat & wear
  • Eliminates TQ converter shudder & clutch pack chatter
  • For all automatic transmissions & 4×4 transfer cases
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Mobil 1 – Extended Performance High Mileage Full Synthetic Engine Oil 5W-30, 1 Quart (Part No.15018)

Extended Performance High Mileage Full Synthetic Engine Oil 5W-30, 1 Quart

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$13.99
You trust your car to keep you going, even after 75,000 miles. Mobil 1 Extended Performance High Mileage full-synthetic motor oil 5W-30 gives engines with over 75,000 miles the extra care they need to go the distance. Formulated to help prevent leaks, it helps to protect critical engine parts for up to 20,000 miles between oil changes, guaranteed.(1) Utilizes Mobil 1’s Triple Action+ Formula to combine outstanding engine performance, protection, and cleanliness with the added benefit of maximized engine power. This cutting-edge formula is recommended by ExxonMobil for all types of modern vehicles, including high-performance, turbo-charged, and supercharged gasoline and diesel multi-valve fuel-injected engines found in passenger cars, SUVs, light vans, and light trucks. Mobil 1 is America’s #1 synthetic motor oil brand at retail,(2) trusted and recommended by car builders and experienced mechanics, and is the Official Motor Oil of NASCAR. ((1)Protects for up to 20,000 miles or 1 year, whichever comes first. To learn more about the Mobil 1 Limited Warranty, visit Mobil.US. (2)Source: The NPD Group/Retail Tracking Service/Dollar Sales/PCMO full-synthetic/52 weeks ending July 1, 2023)

Product Features:
  • Mobil 1 extended performance high mileage full-synthetic engine oil 5w30 is designed for engines with over 75,000 miles to go up to 20,000 miles between oil changes.(1)
  • Utilizes Mobil 1’s triple action+ formula to combine outstanding engine performance, protection, and cleanliness with the added benefit of power
  • Meets ilsac gf-6 standards to help provide low-speed pre-ignition (lspi) and timing chain wear protection while keeping your engine clean and helping to improve your fuel economy
  • Provides excellent internal engine heat protection (up to 500 degrees f) and low temperature protection (to -40 degrees f)
  • Helps extend engine life by working to prevent damaging deposits and sludge buildup
  • Manufacturer part number: 123842
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Quaker State – 5W-30 Full Synthetic Motor Oil, 1 Quart (Part No.550046169)

5W-30 Full Synthetic Motor Oil, 1 Quart

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$7.99
Quaker State Full Synthetic Motor Oil SAE 5W-30 contains the most powerful formulation in the Quaker State portfolio. This product offers superior resistance to thermal and viscosity breakdown compared to Quaker State Synthetic Blend Motor Oil. As the engine temperature increases, the heat activated shear stable viscosity modifiers work to maintain oil film thickness that is necessary to prevent engine parts from metal on metal contact which helps extend engine life. This motor oil maintains its viscosity from start to finish, which means it stays in the grade specified by the car manufacturer throughout the recommended oil drain interval. The product also contains special detergents and dispersant additives that are designed to neutralize the harmful acids generated by the combustion process. This helps prevent the formation of sludge and deposits from forming on crucial engine parts. These properties of Quaker State Ultimate Durability full synthetic motor oil make it reliable and suitable for use in high performance vehicles such as sport cars, SUVs, trucks and minivans. It is compatible with biofuels, ranging from E10 to E85 and suitable for hybrid vehicles.

Product Features:
  • Quaker State Ultimate Durability is our most powerful formulation, providing extreme engine performance and protection against deposits, which allows your engine to operate at maximum horsepower
  • No leading synthetic motor oil provides better protection from friction-related wear when compared to industry standard Sequence IVA engine test results
  • Helps protect against the effects of low-speed pre-ignition (LSPI) in modern turbocharged engines.
  • Provides excellent protection against the formation of sludge and other harmful deposits when compared to Quaker State Synthetic Blend Motor Oil
  • Superior lubrication flow and pumpability at high and low temperatures when compared to Quaker State Synthetic Blend Motor Oil
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Mobil 1 – 75W-90 Gear Lubricant LS: Synthetic, Corrosion Protection, Extends Gear Life, Multi-Purpose, 1 Quart (Part No.26101)

75W-90 Gear Lubricant LS: Synthetic, Corrosion Protection, Extends Gear Life, Multi-Purpose, 1 Quart

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$19.99
Mobil 1 Synthetic Gear Lubricant LS 75W-90 is a supreme, multi-purpose automotive gear lubricant that helps to provide exceptional thermal stability and resistance to high temperature oxidation, extending gear life due to minimal deposits. Helps to deliver outstanding protection against low speed/high torque wear with the capability to handle severe driving conditions while delivering smooth efficient performance. Mobil 1 Synthetic Gear Lubricant LS provides exceptional shear stability, corrosion protection, and enhanced frictional properties. Compared to conventional hypoid gear lubricants, Mobil 1 LS 75W-90 performs exceptionally over a wide range of temperatures to reduce wear at start up. Mobil 1 gear lube helps to minimize leakage and reduce contamination, while providing a good resistance to foaming to maintain film strength for reliable lubrication. Meets or exceeds the requirements of the following industry specifications: API GL-5.

Product Features:
  • Mobil 1 LS synthetic automotive gear lubricant exceeds the highest level of performance requirements of modern passenger vehicles
  • Helps to provide exceptional thermal stability and resistance to high temperature oxidation and extend gear life due to minimal deposits
  • Delivers outstanding protection against low speed/high torque wear, handling severe driving conditions with smooth, efficient performance
  • Compared to conventional hypoid gear lubricants, performs exceptionally over a wide range of temperatures to reduce wear at start up
  • Provides exceptional shear stability, corrosion protection, and enhanced frictional properties
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Valvoline – High Mileage with MaxLife Technology Synthetic Blend 5W-30 Motor Oil: Maximize Engine Life, 5 Quart (Part No.782256)

High Mileage with MaxLife Technology Synthetic Blend 5W-30 Motor Oil: Maximize Engine Life, 5 Quart

from

$31.99
75,000 miles is more than a mile marker. It’s a signal that your engine is ready for greater protection. That’s when you need Valvoline High Mileage with MaxLife Technology Motor Oil. Its exclusive formula is proven to maximize engine life in cars, trucks, and SUVs with over 75,000 miles. Our mixture is specially developed with a unique combination of synthetic and premium conventional oils to protect your high-mileage motor against wear, friction, heat, and deposits – the four major causes of engine breakdown and expensive repairs. Anti-wear additives defend critical engine components, advanced friction-fighting agents reduce heat and abrasion, added detergents clean the inside of your engine, and premium seal conditioners handle aging seals to prevent leaks. It fights sludge, corrosion and rust that can rob your engine of horsepower, fuel efficiency and longevity. From extreme temperatures and cold starts to stop-and-go traffic and frequent short trips, viscosity modifiers make sure the oil flows more easily, coats more completely, and resists thermal breakdown under even the most intense driving conditions. Its unique mixture curbs contaminants to keep high-mileage engines from burning and consuming oil that can foul spark plugs, creating higher emissions and causing your motor to run roughly.

Product Features:
  • MAXLIFE TECHNOLOGY PREVENTS engine breakdown with 40% better wear protection than the industry standard
  • REFRESH AGING SEALS AND PREVENT LEAKS with seal conditioners
  • REDUCE SLUDGE, DEPOSITS, CORROSION, AND RUST with added detergents – keep motors clean inside
  • ENHANCED FRICTION PERFORMANCE HELPS MAXIMIZE POWER with advanced friction-fighting agents
  • MEETS OR EXCEEDS ALL REQUIREMENTS of ILSAC GF-6A, API SP, API SN with SN PLUS, API SN
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Pentosin – PENTOSIN ATF 44 5L (Part No.1058212)

PENTOSIN ATF 44 5L

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$85.99
PENTOSIN ATF 44 5L

Valvoline – High Mileage with MaxLife Technology Synthetic Blend 5W-30 Motor Oil: Maximize Engine Life, 1 Quart (Part No.VV1556/VV155)

High Mileage with MaxLife Technology Synthetic Blend 5W-30 Motor Oil: Maximize Engine Life, 1 Quart

from

$9.99
75,000 miles is more than a mile marker. It’s a signal that your engine is ready for greater protection. That’s when you need Valvoline High Mileage with MaxLife Technology Motor Oil. Its exclusive formula is proven to maximize engine life in cars, trucks, and SUVs with over 75,000 miles. Our mixture is specially developed with a unique combination of synthetic and premium conventional oils to protect your high-mileage motor against wear, friction, heat, and deposits – the four major causes of engine breakdown and expensive repairs. Anti-wear additives defend critical engine components, advanced friction-fighting agents reduce heat and abrasion, added detergents clean the inside of your engine, and premium seal conditioners handle aging seals to prevent leaks. It fights sludge, corrosion and rust that can rob your engine of horsepower, fuel efficiency and longevity. From extreme temperatures and cold starts to stop-and-go traffic and frequent short trips, viscosity modifiers make sure the oil flows more easily, coats more completely, and resists thermal breakdown under even the most intense driving conditions. Its unique mixture curbs contaminants to keep high-mileage engines from burning and consuming oil that can foul spark plugs, creating higher emissions and causing your motor to run roughly.

Product Features:
  • MAXLIFE TECHNOLOGY PREVENTS engine breakdown with 40% better wear protection than the industry standard
  • REFRESH AGING SEALS AND PREVENT LEAKS with seal conditioners
  • REDUCE SLUDGE, DEPOSITS, CORROSION, AND RUST with added detergents – keep motors clean inside
  • ENHANCED FRICTION PERFORMANCE HELPS MAXIMIZE POWER with advanced friction-fighting agents
  • MEETS OR EXCEEDS ALL REQUIREMENTS of ILSAC GF-6A, API SP, API SN with SN PLUS, API SN
  • MaxLife Technology: Valvoline High Mileage with MaxLife Technology is specially formulated to maximize engine life in vehicles with over 75,000 miles, providing superior protection against wear, friction, heat, and deposits.
  • Synthetic Blend Composition: This motor oil features a unique combination of synthetic and premium conventional oils, ensuring optimal performance and protection for high-mileage engines.
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Peak – Original Equipment North American Orange Antifreeze and Coolant: 50/50 Ready To Use, 1 Gallon (Part No.NAOB53)

Original Equipment North American Orange Antifreeze and Coolant: 50/50 Ready To Use, 1 Gallon

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$19.99
PEAK ORIGINAL EQUIPMENT TECHNOLOGY ANTIFREEZE + COOLANT for NORTH AMERICAN VEHICLES is a line of premium coolants specifically designed to match the technology and color requirements of North American vehicles. Each coolant is formulated with the same corrosion inhibitor technology that protected your vehicle straight from the factory. Color cues on the packaging and a list of covered vehicles on the front label make it easy to identify the right match for your specific vehicle. PEAK ORIGINAL EQUIPMENT TECHNOLOGY ANTIFREEZE + COOLANT for NORTH AMERICAN VEHICLES – ORANGE is an extended life antifreeze/coolant based on proprietary state-of-the-art organic acid technology (OAT). The ethylene glycol-based formula represents a carefully balanced mixture of organic acid corrosion inhibitors for complete protection of modern high-performance North American vehicle engines. It can be mixed with any DEX-COOL approved formulations in newer GM, Opel, Daewoo and Saab vehicles, as well as with antifreeze/coolant in Ford and Chrysler vehicles requiring an orange type product. This product’s orange color distinguishes its unique chemistry and ensures easy selection for North American vehicles requiring this type and color of coolant. PEAK ORIGINAL EQUIPMENT TECHNOLOGY ANTIFREEZE + COOLANT for NORTH AMERICAN VEHICLES – ORANGE is free of silicate, borate, phosphate, nitrite, and amines, and is fully compatible with other extended life coolants. It meets the performance requirements of ASTM D3306 and D4985. When installed as part of a complete flush and coolant fill, PEAK guarantees this coolant will provide service life protection of up to 150,000 miles or 5 years.

Product Features:
  • Matches technology and color requirements of North American OEMs specifying a Green Conventional coolant
  • Protects all cooling system metals, including aluminum, against damaging rust and corrosion
  • Compatible with other conventional green antifreeze + coolant formulations
  • Easy-to-pour bottle with color-coding and vehicle applications listed on the front to simplify selecting the right antifreeze + coolant
  • Available as both concentrate and 50/50 prediluted products to do the job right
  • Testing Requirements: For proper freeze and boil over protection, use a traditional refractometer or hydrometer to measure the percentage of ethylene glycol by volume.
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Prestone – Antifreeze and Coolant: Concentrate, Dex-Cool Compatible, Protects Against Corrosion, 1 Gallon (Part No.AF888)

Antifreeze and Coolant: Concentrate, Dex-Cool Compatible, Protects Against Corrosion, 1 Gallon

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$21.49
Prestone DEX-COOL (concentrate) antifreeze+coolant is specially designed to work with these specific vehicles: All GM® vehicles 1995 & newer (GM approved), most Ford® vehicles 2011 – 2018 and most Chysler® vehicles 2013 & newer. Prestone’s Antifreeze+Coolants are designed to the highest standards using state of the art technology. These fluids are designed to not only manage the engine temp and protect from freezing up, they also protect the engine from rust & corrosion. This fluid is designed to last 5yrs / 150,000 miles.

Product Features:
  • Specially formulated to work with vehicles using orange colored fluid; HOAT. All GM 1995 & newer; Most Ford 2011-2018; Most Chrysler 2013 & newer
  • 5 Yr., 150,000 mile Extended life formula
  • Includes the Prestone protection package that protects against rust and corrosion of all cooling system metals, including aluminum.
  • Concentrate formula. Must mix with distilled to the desired mix ratio of EG & water. Can be used for top-off, complete drain and refill or flush and refill of the cooling system.
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FRAM – Extended Life AMAM Antifreeze 50/50 Ready-to Use, 1 Gallon (Part No.F401)

Extended Life AMAM Antifreeze 50/50 Ready-to Use, 1 Gallon

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$10.99
FRAM Extended Life AMAM 50/50 is compatible with ANY antifreeze/coolant in ANY vehicle with aluminum or other cooling system metals. The formulas have a blend of long-lasting inhibitors to guard against temperature extremes and the effects of rust, corrosion, and premature water pump failure. Top-off your cooling system with FRAM Extended Life AMAM 50/50, which is a blend of 50% antifreeze and 50% demineralized water. FRAM 50/50 meets or exceeds ASTM D3306 and D4985 for corrosion protection for cars and light duty trucks, while providing reliable freeze-up & boil-over protection.

Product Features:
  • Formulated to work with All Vehicles. Universally works with all fluid colors; All OAT, POAT, HOAT & IAT.
  • 5 Yr., 150,000 mile Extended life formula.
  • Meets or exceeds ASTM D3306 & D4985 for corrosion protection.
  • Ready to Use formula (prediluted to a 50% Eg & 50% distilled water mix). Perfect for small volume top-off or complete drain and refill of the cooling system
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Richmond Gear – Differential Spool (Part No.81-1033-1)

Differential Spool

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$267.99
Richmond Gear is the leading manufacturer of professional quality, high-performance drivetrain products. Our complete line of products ranges from high performance ring-and-pinion sets for serious street and racing applications to torque-hungry manual transmissions and components. Richmond Gear products have been winners both at the Daytona 500 and U.S. Nationals for decades. WINNERS RUN RICHMOND!

Product Features:
  • For over 80-years, the Richmond Double-Diamond logo has represented some of the highest quality gears in the racing industry. Winners Run Richmond!
  • The superior quality of Richmond gearsets is a result of outstanding design, world class manufacturing and an extensive testing process that is performed on all products.
  • Richmond performance gearsets have been winners for decades at: NHRA, NMRA, NMCA, Daytona 500, WISSOTA and U.S. Nationals.
  • Richmond Gear is a leading manufacturer of high performance ring and pinion gearsets and drivetrain components, backed by a two year warranty.
  • Engineered to perform faster and be more reliable, Richmond performance drivetrain products are the result of a continuous research and development program combined with state-of-the-art manufacturing capabilities.
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Powertrax – No-Slip Traction System (Part No.9204443000)

No-Slip Traction System

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$530.99
For vehicles that are driven daily, the Powertrax No-Slip Traction System is the latest design in quiet traction-adding differential technology. It combines the automatic street-friendly smooth operation of a limited-slip differential with the traction performance of a locking differential. The Powertrax No-Slip locker easily installs in to your differential carrier using basic tools and without affecting your ring and pinion settings. Powertrax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Powertrax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds!The Powertrax® Lock-Right Locker provides outstanding traction for off-road machines and race vehicles. Powertrax No-Slip Traction Systems deliver excellent performance to street-driven cars and trucks.
  • Powertrax® lockers range from the original, Lock-Right for serious straight-line performance, to the No-Slip traction system for street-able vehicles.
  • Powertrax® offers three levels of GRIP locking differentials, ranging from the clutch-type GRIP LS with a forged steel case, the gear-driven GRIP PRO and finally the GRIP LOK for extreme traction.
  • Powertrax® = Extreme Traction Systems!
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    Powertrax – No-Slip Traction System (Part No.9204443020)

    No-Slip Traction System

    from

    $553.99
    For vehicles that are driven daily, the Powertrax No-Slip Traction System is the latest design in quiet traction-adding differential technology. It combines the automatic street-friendly smooth operation of a limited-slip differential with the traction performance of a locking differential. The Powertrax No-Slip locker easily installs in to your differential carrier using basic tools and without affecting your ring and pinion settings. Powertrax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Powertrax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds!The Powertrax® Lock-Right Locker provides outstanding traction for off-road machines and race vehicles. Powertrax No-Slip Traction Systems deliver excellent performance to street-driven cars and trucks.
  • Powertrax® lockers range from the original, Lock-Right for serious straight-line performance, to the No-Slip traction system for street-able vehicles.
  • Powertrax® offers three levels of GRIP locking differentials, ranging from the clutch-type GRIP LS with a forged steel case, the gear-driven GRIP PRO and finally the GRIP LOK for extreme traction.
  • Powertrax® = Extreme Traction Systems!
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    Powertrax – Lock Right Locker (Part No.1950-LR)

    Lock Right Locker

    from

    $487.99
    The Powertrax Lock-Right ultra-strength alloy locker’s straight-line performance is equal to a solid spool, but automatically unlocks in turns. Best suited for extreme off-road to severe on-road use, Powertrax Lock Right lockers replace the spider gears in your open differential carrier using basic tools and without affecting your ring and pinion settings. The whole job can be done in your driveway in a couple of hours, pin included! Powertrax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Powertrax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds!

    Product Features:
    • Powertrax® proves that you don’t have to choose between the superior traction of a locking differential and smooth handling and drivability of an open differential. Powertrax Lock-Right Lockers, No-Slip Traction Systems and GRIP limited slip differentials and lockers give you the best of both worlds!
    • The Powertrax® Lock-Right Locker provides outstanding traction for off-road machines and race vehicles. Powertrax No-Slip Traction Systems deliver excellent performance to street-driven cars and trucks.
    • Powertrax® lockers range from the original, Lock-Right for serious straight-line performance, to the No-Slip traction system for street-able vehicles.
    • Powertrax® offers three levels of GRIP locking differentials, ranging from the clutch-type GRIP LS with a forged steel case, the gear-driven GRIP PRO and finally the GRIP LOK for extreme traction.
    • Powertrax® = Extreme Traction Systems!
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    Castrol – Transmax ATF Full Synthetic Multi-Vehicle Automatic Transmission Fluid (1 Quart) (Part No.152A76)

    Transmax ATF Full Synthetic Multi-Vehicle Automatic Transmission Fluid (1 Quart)

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    $12.29
    Automatic transmission fluid is a technologically advanced, low viscosity formulation specially designed to deliver performance and maximum fuel efficiency for modern automatic transmissions.

    Product Features:
    • Full Synthetic, low viscosity formulation
    • OEM approved and licensed by Ford (MERCON® LV) and GM (DEXRON® -VI)
    • Low viscosity formula for maximum fuel efficiency in modern automatic transmissions
    • Enhanced friction durability for smooth transmission performance
    • Superior high temperature protection to effectively resist oxidation
    • Unsurpassed protection against copper corrosion
    • Industry Specifications and OEM Approvals: JASO-1A
    • Licensed and approved for use in: All GM vehicles (DEXRON®-VI, All previous DEXRON®); All Ford vehicles which specify Mercon® LV
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    ATP – Auto Trans Fluid (Part No.AT-216)

    Auto Trans Fluid

    from

    $22.99
    Product Features:
    • Fully Synthetic
    • Advance transmission protection from standard to sever duty
    • Resist thermal breakdown, oxidation, varnish and sludge
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    Castrol – Transmax ATF DEXRON®-VI Automatic Transmission Fluid 1 Quart (Part No.15B1A0)

    Transmax ATF DEXRON®-VI Automatic Transmission Fluid 1 Quart

    from

    $14.79
    Automatic transmission fluid is certified for use in all General Motors Hydra-Matic® automatic transmissions.

    Product Features:
    • Premium synthetic blend formula exceeds DEXRON®-III H requirements
    • Outstanding sludge resistance provides superior transmission life
    • Enhanced friction durability improves shifting performance
    • Certified and approved by General Motors for all cars and trucks that require DEXRON®-VI
    • Also recommended for use where DEXRON®, DEXRON®-III H, III, IIE and II are specified.
    • Industry Specifications and OEM approvals: Meets or Exceeds General Motors DEXRON®-VI Requirements; DEXRON®-VI Approved and Licensed by General Motors Corporation
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    Idemitsu – Type TLS Automatic Transmission Fluid, 1 qt (Part No.30040093-75000C)

    Type TLS Automatic Transmission Fluid, 1 qt

    from

    $14.49
    Formulated to meet the specific requirements of Toyota, Lexus, and Scion vehicles equipped with conventional (non-CVT) transmissions that require the use of ATF T-IV. Recommended for service-fill in all Toyota, Lexus, and Scion automatic transmissions whe

    Product Features:
    • Excellent resistance to oxidation and thermal breakdown provide long fluid life and extended protection
    • Precisely engineered frictional characteristics guarantee smooth shifting and outstanding anti-shudder performance
    • Provides superior cleanliness, maintaining the transmission free of sludge and varnish deposits
    • Excellent seal compatibility and conditioning reduces risk of fluid leaks due to seal shrinkage, hardening and cracking
    • Advanced anti-wear technology provides maximum protection to gears and bearings
    • Excellent seal compatibility and conditioning reduces risk of fluid leaks due to seal shrinkage, hardening and cracking
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    Prestone – DOT 3 Brake Fluid: MAX Synthetic, Highest Grade, Superior Protection, 100k miles, 32 oz (Part No.AS410)

    DOT 3 Brake Fluid: MAX Synthetic, Highest Grade, Superior Protection, 100k miles, 32 oz

    from

    $12.49
    Prestone® MAX DOT 3 Motor Vehicle Brake Fluid is our highest grade formula, maximizing performance vs. DOT standard. Prestone MAX is our best brake fluid at protecting against overheating and brake fade. With 100,000 mile fluid life, our longest life fluid has 2X more miles between replacement than regular Prestone DOT 3. Prestone MAX has superior performance in severe braking conditions when compared to regular Prestone DOT 3, which means even more piece of mind about the braking system. This synthetic fluid starts with our highest dry boiling point giving our best protection against performance decline due to water absorption. Prestone MAX DOT 3 is safe to use in all DOT 3 braking systems, ABS, disc or drum, and can mix with any DOT 3 fluid. Mixing Prestone MAX with other fluids will lower the performance rating for miles and boil points, for best results replace completely with Prestone MAX DOT 3. It is recommended to only use the DOT fluid specified for your car. Using a different DOT product can affect the boiling point or replacement interval if the wrong fluid is used.

    Product Features:
    • 100,000 Mile Fluid Life
    • Prevent Overheating & Brake Fade with Our Highest Grade Formula. Prevents corrosion of all metals within the braking system.
    • Superior Protection in Extreme Braking Conditions
    • Synthetic, Long Life Formula – 2X Longer than regular Prestone DOT 3
    See More

    Prestone – DOT 3 Brake Fluid: Synthetic, Prevents Corrosion, Safe For ABS, Disc, Drum Brakes, 50k miles, 12 oz (Part No.AS400)

    DOT 3 Brake Fluid: Synthetic, Prevents Corrosion, Safe For ABS, Disc, Drum Brakes, 50k miles, 12 oz

    from

    $5.99
    Prestone® DOT 3 Motor Vehicle Brake Fluid delivers enhanced performance vs. DOT standards, benefitting all vehicles calling for DOT 3. This synthetic fluid starts with a higher dry boiling point than the DOT minimum standard to protect against overheating, brake fade and performance decline due to water absorption. This extended life (50,000 mile) fluid is also formulated to prevent corrosion of all metals within the braking system.  This formula is safe to use in all DOT 3 braking systems (ABS, disc or drum) and can mix with any DOT 3 fluid.  It is recommended to only use the DOT fluid specified for your car, as using a different DOT product can affect the boiling point or replacement interval if the wrong fluid is used.

    Product Features:
    • 50,000 Mile Fluid Life
    • Prevent Overheating & Brake Fade with High Grade Formula*
    • Protects against performance decline due to water absorption. Prevents corrosion of all metals within the braking system.
    • Synthetic, Extended Fluid Life Formula
    See More

    1991 GMC K2500 Fluids and Chemicals

    You count on your 1991 GMC K2500 to run right. That means taking care of it with regular maintenance, necessary repairs, and the right parts. Advance Auto Parts can help with all of that thanks to our extensive inventory of trusted Fluids and Chemicals. With 44 Fluids and Chemicals ranging in price from $5.99 to $487.99, you’re sure to find everything you need for your 1991 GMC K2500.

    Brands matter. If you want to shop a specific Fluids and Chemicals brand, we stock 10 different brands like Prestone, Valvoline, and Mobil Oil. 1991 GMC K2500 Fluids and Chemicals start as low as $5.99!

    One of the best ways to find top quality OEM or aftermarket Fluids and Chemicals is by asking professionals. Short of that, you can shop with confidence thanks to our 49,890 extensive product reviews on 1991 GMC K2500 Fluids and Chemicals. Some of the top-rated Fluids and Chemicals products we carry are Advanced 5W-30 Full Synthetic Motor Oil, 1 Quart with 4.9 stars and High Mileage with MaxLife Technology Synthetic Blend 5W-30 Motor Oil: Maximize Engine Life, 5 Quart with 4.8 stars.

    Did we mention you can order your Fluids and Chemicals from our online catalog and have them shipped right to your garage? Or, if you feel like seeing the parts first-hand, search for your nearest Advance Auto Parts location above and pick up in-store when you’re ready. Browse our full Fluids and Chemicals inventory for your 1991 GMC K2500 below to get started!

    Top-Rated Fluids and Chemicals Brands For Your 1991 GMC K2500

    Trusted Fluids and Chemicals OEM and aftermarket product brands are what Advance Auto Parts specializes in. The brands we work with are sure to keep that 1991 GMC K2500 running right for years to come. In our inventory you’ll find brands like Prestone, Valvoline, Mobil Oil, and even more.

    Popular Castrol Fluids and Chemicals

    You’ll find popular Castrol brand products across Transmission Fluids. All are waiting to get your 1991 GMC K2500 back on the road. Some of the top-rated Castrol products in these categories are:
    Transmax ATF DEXRON®-VI Automatic Transmission Fluid 1 Quart
    from $14.79
    (118)
    Transmax ATF DEXRON®-VI Automatic Transmission Fluid 1 Quart
    Automatic Transmission Fluids
    Domestic Multi-vehicle (ATF) Automatic Transmission Fluid (1 Quart)
    from $7.99
    (8)
    Domestic Multi-vehicle (ATF) Automatic Transmission Fluid (1 Quart)
    Automatic Transmission Fluids

    Top-Rated Valvoline Fluids and Chemicals


    If Valvoline are what you’re looking for, our inventory holds plenty. We stock Valvoline brand Fluids and Chemicals for your 1991 GMC K2500, and some of our most reviewed Valvoline parts include:

    FAQs for 1991 GMC K2500 Fluids and Chemicals

    What are the most purchased Fluids and Chemicals for the 1991 GMC K2500?

    Out of 44 Fluids and Chemicals for the 1991 GMC K2500, the most popular in our inventory are:
    Antifreeze and Coolant: 50/50 Ready To Use, Universal, Protects Against Corrosion, 1 Gallon
    from $14.99
    This product is not rated
    Antifreeze and Coolant: 50/50 Ready To Use, Universal, Protects Against Corrosion, 1 Gallon
    Engine Coolant and Antifreeze
    Antifreeze and Coolant: Concentrate, Universal, Protects Against Buildup And Rust, 1 Gallon
    from $17.99
    This product is not rated
    Antifreeze and Coolant: Concentrate, Universal, Protects Against Buildup And Rust, 1 Gallon
    Engine Coolant and Antifreeze

    What are the top-rated 1991 GMC K2500 Fluids and Chemicals?

    Top-rated Fluids and Chemicals for your 1991 GMC K2500 based on customer reviews/ratings are:
    Advanced 5W-30 Full Synthetic Motor Oil, 1 Quart
    from $11.99
    (1809)
    Advanced 5W-30 Full Synthetic Motor Oil, 1 Quart
    “Great”