Below you will find the best synthetic oil for a 1985 Chevrolet Trucks K20. 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 1985 K20
| Product Name | Product Description | Capacities | Product |
|---|---|---|---|
| Signature Series Max-Duty Synthetic Diesel Oil 15W-40 | Our top-grade synthetic diesel oil! Get the best synthetic diesel oil for your 1985 Chevrolet Trucks K20 6.2L engine and confidently extend drain intervals! Provides six times better wear protection than required by the Detroit Diesel DD13 Scuffing Test for Specification DFS 93K222. Heavy-Duty On-/Off-Road: Three times (3X) OEM1 recommendation, not to exceed 60,000 miles/600 hours or oneyear, whichever comes first. Turbodiesel Pickup: Two times (2X) OEM1 recommendation, not to exceed 25,000 miles or one year, whichever comes first. Gasoline Engine S | With filter 7 quarts After refill check oil level. |
DMEQT-EA
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| Heavy-Duty Synthetic Diesel Oil 15W-40 | AMSOIL Heavy-Duty Synthetic Diesel Oil is a special formula made for your hard-working equipment. It is engineered to provide four times better wear protection for your 1985 Chevrolet Trucks. Check your owner's manual for the oil change interval. This is the best synthetic diesel oil for your Chevrolet Trucks and be sure to get an awesome oil filter. | With filter 7 quarts After refill check oil level. |
ADPQT-EA
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Recommended oil filters for my 1985 K20
| Product Name | Product Description | Product |
|---|---|---|
| AMSOIL Ea Oil Filters | This filter is for your 1985 Chevrolet Trucks K20 and is designed to last up to 25k (normal conditions) or 15k miles (severe conditions) or 1 year, whichever comes first. |
EAO24-EA
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| WIX Oil Filter | WIX oil filter change intervals for your 1985 Chevrolet Trucks K20 are extended OEM recommendations to match the drain intervals of AMSOIL XL Motor oil. (12,000 miles or 1 year, whichever comes first). |
51061-EA
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Recommended transmission fluids for my 1985 K20
| Product Name | Note | Capacities | Product Description | Product |
|---|---|---|---|---|
| SEVERE GEAR® 80W-90 | Manual Transmission Fluid (1) In Canada use 80W. |
SM465/M20 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. |
SM465/M20 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. |
SM465/M20 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 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
5 quarts Initial Fill
4 speed THM700-R4 Total Fill 11.5 quarts |
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
5 quarts Initial Fill
4 speed THM700-R4 Total Fill 11.5 quarts |
Outstanding protection and resists varnish! Change interval based on your K20 owner's manual. |
OTLQT-EA
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Transmission filters
| Product Name | Product Description | Product |
|---|---|---|
| WIX Transmission Filter | This awesome WIX Transmission Filter will protect your 1985 Chevrolet Trucks K20's transmission from harmful debris and the awesome filtration will reduce wear in your K20. |
58881-EA
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| WIX Transmission Filter | WIX Transmission Filter will protect your 1985 Chevrolet Trucks K20's transmission from harmful debris and the awesome filtration will reduce wear in your K20. |
58897-EA
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Differential for my Chevrolet Trucks K20
| Product Name | Note | Capacities | Product Description | Product |
|---|---|---|---|---|
| SEVERE GEAR® 80W-90 | (1) In Canada use 80W. |
Front 4 pints
Notes:
(1) In Canada use 80W.
With 10.5 RG Chev Rear 7.2 pints
With 10.5 RG Dana Rear 5.5 pints
With 12.25 RG Rear 13.9 pints
With 8.5 RG Rear 4.2 pints
With 9.5 RG Rear 5.5 pints
With 9.75 RG Rear 5.9 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) In Canada use 80W. |
Front 4 pints
Notes:
(1) In Canada use 80W.
With 10.5 RG Chev Rear 7.2 pints
With 10.5 RG Dana Rear 5.5 pints
With 12.25 RG Rear 13.9 pints
With 8.5 RG Rear 4.2 pints
With 9.5 RG Rear 5.5 pints
With 9.75 RG Rear 5.9 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) In Canada use 80W. |
Front 4 pints
Notes:
(1) In Canada use 80W.
With 10.5 RG Chev Rear 7.2 pints
With 10.5 RG Dana Rear 5.5 pints
With 12.25 RG Rear 13.9 pints
With 8.5 RG Rear 4.2 pints
With 9.5 RG Rear 5.5 pints
With 9.75 RG Rear 5.9 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 K20
| Product Name | Product Description | Capacities | Product |
|---|---|---|---|
| Passenger Car & Light Truck Antifreeze & Coolant | maximum protection for your 1985 Chevrolet Trucks K20 under extreme temperatures and operating conditions! Lasts up to 150,000 miles or five years! (whichever comes first) |
ANTPC1G-EA
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|
| Low Toxicity Antifreeze and Engine Coolant | Lasts in your 1985 Chevrolet Trucks K20 for up to 150,000 miles or five years! (whichever comes first). Biodegradable! |
ANT1G-EA
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Protect your vehicle with the best synthetic motor oil change possible as Amsoil is fantastic for reducing friction, temperature, and engine wear! Your car will thank you! If you need to know the capacity of your engine, then you can find it on this page. It is listed in quarts and make sure you get an awesome filter to go with the oil. Don't change your own oil? No biggie, just take the quarts recommended for your car and the filter to a mechanic who, if honest, will gladly change it and should charge you only 1 hour labor. Use Yelp or Google to search for a mechanic shop near you! Buy now and support American oil and jobs!
