1966 Oldsmobile F85 Engine Additives
Keep Your 1966 Oldsmobile F85 in Top Shape with Quality Engine Additives
Whether you’re repairing or upgrading your Engine Additive, using high-quality parts is key to keeping your 1966 Oldsmobile F85 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Posi Units and Components. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.
Competitive Prices and Extensive Inventory
The average price for a 1966 Oldsmobile F85 Engine Additive at Advance Auto Parts is around $388.66, with a range that starts at $346.99 and goes up to $441.99. With 3 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like Lock Right Locker, Lock Right Locker, and Differential Spool start at just $346.99 and offer a great balance of form and function.
Explore Related Parts
While you’re upgrading or replacing your Engine Additive, don’t forget to check out other key components like Adhesives and Coolant/Antifreeze. At Advance Auto Parts, we’re here to help you keep your 1966 Oldsmobile F85 in peak condition, inside and out.
Find Your Specific 1966 Oldsmobile F85 Engine Additives
Looking for the perfect Engine Additive for your 1966 Oldsmobile F85? You’re in the right place. Below, you’ll find links to various types of Engine Additives that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Engine Additives, ensuring durability and a precise fit for your Oldsmobile F85. Whether you’re driving a 1966 model or another popular model year like
1964,
1965,
1967,
1968,
1969,
1970,
1971, and
1972, we’ve got you covered. Purchasing Engine Additives from Advance Auto Parts is a smart choice, giving you access to trusted brands and parts built to perform. Below, you’ll find links to various types of Engine Additives that fit your vehicle.
Essential 1966 Oldsmobile F85 Engine Additives
Richmond Gear – Differential Spool (Part No.81-1028-1)
from
$259.99
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:
See More
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.
Richmond Gear – Differential Spool (Part No.81-1235-1)
from
$346.99
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:
See More
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.
Powertrax – Lock Right Locker (Part No.1940-LR)
from
$441.99
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!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!
See More
Richmond Gear – Differential Spool (Part No.81-1033-1)
from
$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:
See More
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.
Powertrax – Lock Right Locker (Part No.1910-LR)
from
$376.99
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!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!
See More
Popular 1966 Oldsmobile F85 Engine Additives Categories
Most Popular Posi Units and Components for 1966 Oldsmobile F85s
Enhance your 1966 Oldsmobile F85 with one of the 3 Posi Units and Components we have in stock, starting at just $346.99.
Powertrax – Lock Right Locker (Part No.1940-LR)
from
$441.99
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!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!
See More
Powertrax – Lock Right Locker (Part No.1910-LR)
from
$376.99
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!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!
See More
Richmond Gear – Differential Spool (Part No.81-1235-1)
from
$346.99
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:
See More
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.
FAQs for 1966 Oldsmobile F85 Engine Additives
What are the best-selling Engine Additives for 1966 Oldsmobile F85s?
Out of 3 Engine Additives that fit 1966 Oldsmobile F85s, the following parts are the top sellers:
- Lock Right Locker (10461151) – $376.99
- Lock Right Locker (10461180) – $441.99
- Differential Spool (10563580) – $346.99
What’s the price range for 1966 Oldsmobile F85 Engine Additives?
The prices of Engine Additives for the 1966 Oldsmobile F85 range from $346.99 up to $441.99 for the most premium parts.
What is the average price of an Engine Additive for a 1966 Oldsmobile F85?
The average price for Engine Additives for the 1966 Oldsmobile F85 is $388.66. Keep in mind the variety of part types within our Engine Additive category, where you are likely to find a wide range of prices across a variety of parts and components.
Does Advance Auto Parts sell Engine Additives for other Oldsmobile F85 model years?
What are the cheapest Engine Additives for my 1966 Oldsmobile F85?
The cheapest 1966 Oldsmobile F85 Engine Additives we carry are:
- Differential Spool (10563580) – $346.99
- Lock Right Locker (10461151) – $376.99
- Lock Right Locker (10461180) – $441.99
Does Advance Auto Parts sell Engine Additives for any other 1966 Oldsmobile models?
Yes. We stock Engine Additives for 6 other popular 1966 Oldsmobile models. Some of the most popular are 1966 98 Engine Additives, 1966 Delta 88 Engine Additives, 1966 Starfire Engine Additives, 1966 Jetstar 88 Engine Additives, and 1966 442 Engine Additives.
What types of Engine Additives do you sell for my 1966 Oldsmobile F85?
We currently have just 1 Engine Additive in stock for a 1966 Oldsmobile F85, and as of 11/2/25, it is a Posi Units and Component.
Can I get help with 1966 Oldsmobile F85 Engine Additive orders?
Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Oldsmobile Engine Additives and more.
What is your return policy for Oldsmobile F85 Engine Additives?
Advance Auto Parts keeps returns simple. For new Oldsmobile F85 Engine Additives and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.