1985 GMC G3500 Gear Oils

Castrol® GTX® High Mileage 10W-30 Synthetic Blend Motor Oil is the ultimate choice for extending the life of high-mileage engines. Designed with advanced Phosphorus Replacement Technology, it safeguards your vehicle’s emission system while meeting or exceeding API SP and ILSAC GF-6 standards. This premium synthetic blend offers superior dispersancy to combat sludge buildup, exceptional oil burn-off protection that surpasses industry benchmarks, and advanced additives to minimize engine wear. Its seal conditioners help reduce leaks, ensuring optimal engine performance over time. Engineered for improved fuel economy in 10W-30 grades, this motor oil is perfect for drivers seeking reliability and efficiency. With a 5-quart capacity, it delivers outstanding value and peace of mind for your high-mileage vehicle.

Product Features:

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Product Features:

• Phosphorus Replacement Technology helps extend emission system life
• Superior dispersancy that fights sludge build up
• Exceptional oil burn-off protection exceeding industry standards (1)
• Seal conditioners to help reduce leaks
• Advanced additives that minimize engine wear
• Improved fuel economy (2)
• (1) Based on API and ACEA volatility specifications
• (2) In 5W-20, 5W-30 and 10W-30 grades versus industry specifications
• Meets or exceeds the following specifications:
• API SP/SN PLUS/SN/SM
• ILSAC GF-6

Castrol® GTX® 10W-30 is a premium conventional motor oil that has been helping to extend engine life for over 50 years. It is specially engineered to prevent harmful build-up of sludge while protecting against new oil splatter formation better than tough industry standards. Sludge is a thick, tar like substance caused by severe driving conditions such as heavy traffic, poor fuel quality, harsh driving conditions and exceeding oil change intervals. Sludge can block your engine’s vital oilways like cholesterol and if untreated, can rob an engine of its power and ultimately its life.

Product Features:

• Advanced protection against viscosity and thermal breakdown
• Superior protection against engine sludge
• Premium quality base oils and anti-wear additives to help extend the life of your engine
• Helps minimize oil consumption
• Meets or exceeds the following specifications:
• API SP/SN PLUS/SN/SM
• ILSAC GF-6

Give your higher mileage engine the care it deserves with Mobil 1 High Mileage full-synthetic motor oil 0W-20. This formula utilizes Mobil 1’s signature Triple Action Formula to deliver outstanding engine performance, protection, and cleanliness to vehicles with over 75,000 miles. Mobil 1 High Mileage motor oil extends engine life by reducing friction and preventing deposits and sludge buildup, keeping critical engine parts clean and protected for up to 10,000 miles between oil changes. (1) Mobil 1 helps to keep your engine running at lower temperatures (2) and is proven to cool engine temperatures by over 10%. (3) Mobil 1 High Mileage full-synthetic motor oil 10W-30 also helps control oxidation to prevent oil breakdown and is recommended by ExxonMobil for all types of modern cars, SUVs, light vans, and light trucks, including those with high-performance, turbocharged, supercharged, multi-valve, or fuel-injected engines. Mobil 1 is America’s No. 1 selling synthetic motor oil brand at retail, (4) trusted and recommended by car builders and experienced mechanics, and is the Official Motor Oil of NASCAR®. ((1) Protects for up to 10,000 miles or 1 year, whichever comes first. To learn more about the Mobil 1 Limited Warranty, visit Mobil.US. (2) Compared to conventional oil. (3) Based on proprietary engine testing results may vary. (4) Source: The NPD Group/ Retail Tracking Service/ Dollar Sales/ PCMO full-synthetic/ 52 weeks ending Feb 25, 2023)

Product Features:

• Mobil 1 High Mileage full-synthetic motor oil 10W-30 is designed for engines with over 75,000 miles to go up to 10,000 miles between oil changes (1)
• Utilizes Mobil 1’s signature Triple Action Formula to deliver outstanding engine performance, protection, and cleanliness
• 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 -30 degrees F)
• Mobil 1 is specially formulated to help remove sludge and lower engine temperatures
• Manufacturer Part Number: 103535
• Extended Engine Life: This high mileage motor oil extends engine life by reducing friction and preventing deposits and sludge buildup, keeping critical engine parts clean and protected for up to 10,000 miles between oil changes.
• Temperature Control: Proven to cool engine temperatures by over 10%, Mobil 1 helps to keep your engine running at lower temperatures compared to conventional oil.
• Oxidation Control: Mobil 1 High Mileage full-synthetic motor oil helps control oxidation to prevent oil breakdown, ensuring long-lasting performance and protection.
• Versatile Compatibility: Recommended by ExxonMobil for all types of modern cars, SUVs, light vans, and light trucks, including those with high-performance, turbocharged, supercharged, multi-valve, or fuel-injected engines.

Castrol® GTX® 10W-30 is a premium conventional motor oil that has been helping to extend engine life for over 50 years. It is specially engineered to prevent harmful build-up of sludge while protecting against new oil splatter formation better than tough industry standards. Sludge is a thick, tar like substance caused by severe driving conditions such as heavy traffic, poor fuel quality, harsh driving conditions and exceeding oil change intervals. Sludge can block your engine’s vital oilways like cholesterol and if untreated, can rob an engine of its power and ultimately its life.

Product Features:

• Advanced protection against viscosity and thermal breakdown
• Superior protection against engine sludge
• Premium quality base oils and anti-wear additives to help extend the life of your engine
• Helps minimize oil consumption
• Meets or exceeds the following specifications:
• API SP/SN PLUS/SN/SM
• ILSAC GF-6

If you trust your vehicle to be there for you, you need to be there for its engine, with Mobil 1 Extended Performance full-synthetic motor oil 10W-30. Our ultimate full-synthetic motor oil meets or exceeds the industry’s toughest standards to help you get the most from your engine for up to 20,000 miles between oil changes, guaranteed.(1) Mobil 1 Extended Performance 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 No. 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 Feb 25, 2023)

Product Features:

• Mobil 1 High Mileage full-synthetic motor oil 10W-30 is designed for engines with over 75,000 miles to go up to 10,000 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
• Helps extend engine life by working to prevent damaging deposits and sludge buildup
• Provides excellent internal engine heat protection (up to 500 degrees F) and low temperature protection (to -40 degrees F)
• Manufacturer Part Number: 102990
• Extended Engine Protection: Mobil 1 Extended Performance full-synthetic motor oil 10W-30 protects your engine for up to 20,000 miles or 1 year, ensuring long-lasting performance and reliability.
• Versatile Compatibility: Recommended for all types of modern vehicles, including high-performance, turbo-charged, and supercharged gasoline and diesel multi-valve fuel-injected engines in passenger cars, SUVs, light vans, and light trucks.
• Industry-Leading Standards: Meets or exceeds the industry’s toughest standards, making it a trusted choice for car builders, experienced mechanics, and as the Official Motor Oil of NASCAR«.
• America’s No. 1 Synthetic Motor Oil Brand: Mobil 1 is the top synthetic motor oil brand at retail, trusted by consumers and professionals alike for its superior quality and performance.

3 Qt. Penzoil 80W90 conventional gear Oil. W/ bottle of Posi additive.

Product Features:

• Includes three quarts of conventional oil and one 4oz bottle of Yukon positraction additive

3 Qt. Penzoil 80W90 conventional gear Oil.

Product Features:

• Includes three quarts of conventional oil

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

Product Features:

• positraction additive
• For use in any clutch-style limited slip