Below you will find the best synthetic oil for a 1981 Chevrolet Trucks G20 HD VAN. Maximize your vehicle's potential with 100% full synthetic oil that is made in the USA! For more than the past 50 years, AMSOIL has perfected the art of maximizing efficiency and engine life. The advanced synthetic formulas deliver superior protection from heat, friction, and wear, keeping engines as good as new for miles. Upgrade to AMSOIL today and experience better performance, reliability, and reduced oil consumption. Click add to cart for more details. Sign up as a preferred customer and get discounts and more! The oil type, capacity and oil filter (if available) are listed below and verified for accuracy. Upgrade now!
Recommended oil for my 1981 G20 Hd Van
| Product Name | Product Description | Capacities | Product |
|---|---|---|---|
| Signature Series 10W-30 Synthetic Motor Oil | Get the best synthetic oil for your G20 Hd Van now! Save time and money and protect your Chevrolet Trucks. | With filter 5 quarts After refill check oil level. |
ATMQT-EA
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| XL 10W-30 Synthetic Motor Oil | Protect your G20 Hd Van with Amsoil and support the best MADE in USA oil! | With filter 5 quarts After refill check oil level. |
XLTQT-EA
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| OE 10W-30 Synthetic Motor Oil | AMSOIL OE Synthetic Motor Oil is specially made for the extended oil change intervals recommended for your 1981 Chevrolet Trucks G20 Hd Van 4.1L engine. It has advanced synthetic technology that resists chemical breakdown for maximum wear protection for your vehicle which is well beyond the traditional 3,000-mile oil change interval. Get the best synthetic oil now for your Chevrolet Trucks G20 Hd Van. | With filter 5 quarts After refill check oil level. |
OETQT-EA
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Recommended oil filters for my 1981 G20 Hd Van
| Product Name | Product Description | Product |
|---|---|---|
| AMSOIL Ea Oil Filters | This filter is for your 1981 Chevrolet Trucks G20 Hd Van and is designed to last up to 25k (normal conditions) or 15k miles (severe conditions) or 1 year, whichever comes first. |
EAO59-EA
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Recommended transmission fluids for my 1981 G20 Hd Van
| Product Name | Note | Capacities | Product Description | Product |
|---|---|---|---|---|
| SEVERE GEAR® 80W-90 | Manual Transmission Fluid (1) In Canada use 80W. |
3-SPD 3 pints
4-SPD 8 pints |
This lube is made to exceed the requirements of equipment and all vehicles that require SAE 80W-90 viscosity. It is made with synthetic base oils and top additives without adding any wax. Amsoil Severe Gear is solid against thermal breakdown. Will give you awesome protection for bearings and gears and tough against heat which will help extend the life of your equipment and avoid costly repairs. Made in the U.S.A. |
AGLPK-EA
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| SEVERE GEAR® 75W-90 | Manual Transmission Fluid (1) In Canada use 80W. |
3-SPD 3 pints
4-SPD 8 pints |
This special formula is made for harsh operating conditions that pick-up trucks endure. Also top-notch protection for SUVs, heavy equipment, and other heavy-duty vehicles. Made in the USA. |
SVGPK-EA
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| SEVERE GEAR® 75W-110 | Manual Transmission Fluid (1) In Canada use 80W. |
3-SPD 3 pints
4-SPD 8 pints |
This is a fantastic lubricant for towing trailers, heavy duty hauling, off road driving/4x4, commercial applications, and for race enthusiasts. This severe gear lube will protect bearings, gears from friction and exceeds performance of any regular gear oil out there! Keep your truck or vehicle out of the shop and avoid costly repairs with this made in the USA lube. |
SVTPK-EA
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| Signature Series Multi-Vehicle Synthetic Automatic Transmission Fluid | Manual Transmission Fluid |
3-SPD 3 pints
4-SPD 8 pints |
Amsoil's Signature Series Multi-Vehicle Synthetic automatic transmission fluid is made to blow the doors off any regular or conventional ATF fluids on the market and our oil surpasses the performance needs of most vehicles. Protect your transmission and avoid costly repairs. This fluid has an advanced formula to give awesome top-notch protection under harsh operating conditions. Transmission repairs are expensive so protect your vehicle with this great fluid! |
ATFPK-EA
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| OE Multi-Vehicle Synthetic Automatic Transmission Fluid | Manual Transmission Fluid |
3-SPD 3 pints
4-SPD 8 pints |
Outsanding protection and resists varnish! Change interval based on your G20 Hd Van's recommendation. |
OTFQT-EA
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| Torque-Drive® Synthetic Automatic Transmission Fluid | Manual Transmission Fluid |
3-SPD 3 pints
4-SPD 8 pints |
Awesome protection under extreme temperature! Protect heavy-duty transmissions with this made in the USA oil. Follow the service interval in your owner's manual. Protect your Chevrolet Trucks. |
ATD1G-EA
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| Signature Series Fuel-Efficient Synthetic Automatic Transmission Fluid | Automatic Transmission Fluid (1) This specification has been updated from Dexron II or III to Dexron VI per a Technical Service Bulletin from the manufacturer |
3 speed THM400 Total Fill 11 quarts
4.3 quarts Initial Fill
3 speed THM350 Total Fill 10 quarts
3.5 quarts Initial Fill |
If a lighter viscosity is needed then this automatic transmission fluid provides top-notch protection! Recommended for Toyota, Ford, and General Motors transmissions. You will get the same awesome protection as Amsoil's Signature Series Multi-Vehicle automatic transmission fluid. Also recommended for vehicles that need GM DEXRON® VI, Ford MERCON® LV and SP, Honda DW-1, Nissan Matic-S, and Toyota WS fluid specifications. |
ATLPK-EA
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| OE Fuel-Efficient Synthetic Automatic Transmission Fluid | Automatic Transmission Fluid (1) This specification has been updated from Dexron II or III to Dexron VI per a Technical Service Bulletin from the manufacturer |
3 speed THM400 Total Fill 11 quarts
4.3 quarts Initial Fill
3 speed THM350 Total Fill 10 quarts
3.5 quarts Initial Fill |
Outstanding protection and resists varnish! Change interval based on your G20 Hd Van owner's manual. |
OTLQT-EA
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Differential for my Chevrolet Trucks G20 Hd Van
| Product Name | Note | Capacities | Product Description | Product |
|---|---|---|---|---|
| SEVERE GEAR® 80W-90 | (1) Use GM P/N 89021671 which replaces previously recommended GM P/N 1052271. Do not add friction modifier. |
With 10.5 RG Rear 6.3 pints
With 8.5 RG Rear 4.2 pints
With 8.8 RG Rear 3.6 pints
With 9.5 RG Rear 5.5 pints |
This lube is made to exceed the requirements of equipment and all vehicles that require SAE 80W-90 viscosity. It is made with synthetic base oils and top additives without adding any wax. Amsoil Severe Gear is solid against thermal breakdown. Will give you awesome protection for bearings and gears and tough against heat which will help extend the life of your equipment and avoid costly repairs. Made in the U.S.A. |
AGLPK-EA
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| SEVERE GEAR® 75W-90 | (1) Use GM P/N 89021671 which replaces previously recommended GM P/N 1052271. Do not add friction modifier. |
With 10.5 RG Rear 6.3 pints
With 8.5 RG Rear 4.2 pints
With 8.8 RG Rear 3.6 pints
With 9.5 RG Rear 5.5 pints |
This special formula is made for harsh operating conditions that pick-up trucks endure. Also top-notch protection for SUVs, heavy equipment, and other heavy-duty vehicles. Made in the USA. |
SVGPK-EA
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| SEVERE GEAR® 75W-110 | (1) Use GM P/N 89021671 which replaces previously recommended GM P/N 1052271. Do not add friction modifier. |
With 10.5 RG Rear 6.3 pints
With 8.5 RG Rear 4.2 pints
With 8.8 RG Rear 3.6 pints
With 9.5 RG Rear 5.5 pints |
This is a fantastic lubricant for towing trailers, heavy duty hauling, off road driving/4x4, commercial applications, and for race enthusiasts. This severe gear lube will protect bearings, gears from friction and exceeds performance of any regular gear oil out there! Keep your truck or vehicle out of the shop and avoid costly repairs with this made in the USA lube. |
SVTPK-EA
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Recommended coolants for my Chevrolet Trucks G20 Hd Van
| Product Name | Product Description | Capacities | Product |
|---|---|---|---|
| Passenger Car & Light Truck Antifreeze & Coolant | maximum protection for your 1981 Chevrolet Trucks G20 Hd Van under extreme temperatures and operating conditions! Lasts up to 150,000 miles or five years! (whichever comes first) |
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|
| Low Toxicity Antifreeze and Engine Coolant | Lasts in your 1981 Chevrolet Trucks G20 Hd Van for up to 150,000 miles or five years! (whichever comes first). Biodegradable! |
ANT1G-EA
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Do not worry about buying Amsoil because you believe your local dealership will not put it in for you. Call your friendly local mechanic and they should be happy to change your oil after you ask them if you can bring your own filter and quarts necessary for your car or truck. Chevy, Ford, Mazda, Honda, Toyota, or any car dealership may do it also, you have to contact them. They will charge you a small fee for changing your oil but you will save time and money in the long run! Usually, it should be no more than 1 hour of labor. Be sure to get the oil filter for your engine and check the capacity on this page to see how much oil your car or truck needs. Thanks for visiting our page.
