Below you will find the best synthetic oil for a 1985 Oldsmobile 98. 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 98
| Product Name | Product Description | Capacities | Product |
|---|---|---|---|
| Signature Series 10W-30 Synthetic Motor Oil | Get the best synthetic oil for your 98 now! Save time and money and protect your Oldsmobile. | With filter 4.5 quarts After refill check oil level. |
ATMQT-EA
Add To Cart  Add To Cart |
| XL 10W-30 Synthetic Motor Oil | Protect your 98 with Amsoil and support the best MADE in USA oil! | With filter 4.5 quarts After refill check oil level. |
XLTQT-EA
Add To Cart Add To Cart |
| OE 10W-30 Synthetic Motor Oil | AMSOIL OE Synthetic Motor Oil is specially made for the extended oil change intervals recommended for your 1985 Oldsmobile 98 3.8L 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 Oldsmobile 98. | With filter 4.5 quarts After refill check oil level. |
OETQT-EA
Add To Cart Add To Cart |
Recommended oil filters for my 1985 98
| Product Name | Product Description | Product |
|---|---|---|
| AMSOIL Ea Oil Filters | This is the best oil filter for your 1985 Oldsmobile 98 and is designed to last up to 25k (normal conditions) or 15k miles (severe conditions) or 1 year, whichever comes first. |
EA15K29-EA
Add To Cart Add To Cart |
| WIX Oil Filter | WIX oil filter change intervals for your 1985 Oldsmobile 98 are extended OEM recommendations to match the drain intervals of AMSOIL XL Motor oil. (12,000 miles or 1 year, whichever comes first). |
51040-EA
Add To Cart Add To Cart |
Recommended transmission fluids for my 1985 98
| Product Name | Note | Capacities | Product Description | Product |
|---|---|---|---|---|
| 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 |
4 speed THM440-T4 Total Fill 10 quarts 6 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
Add To Cart Add To Cart |
| 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 |
4 speed THM440-T4 Total Fill 10 quarts 6 quarts Initial Fill | Outstanding protection and resists varnish! Change interval based on your 98 owner's manual. |
OTLQT-EA
Add To Cart Add To Cart |
Recommended coolants for my Oldsmobile 98
| Product Name | Product Description | Capacities | Product |
|---|---|---|---|
| Passenger Car & Light Truck Antifreeze & Coolant | maximum protection for your 1985 Oldsmobile 98 under extreme temperatures and operating conditions! Lasts up to 150,000 miles or five years! (whichever comes first) |
ANTPC1G-EA
Add To Cart Add To Cart |
|
| Low Toxicity Antifreeze and Engine Coolant | Lasts in your 1985 Oldsmobile 98 for up to 150,000 miles or five years! (whichever comes first). Biodegradable! |
ANT1G-EA
Add To Cart Add To Cart |
Enjoy concerts, music, shopping, movies, lunch at your favorite place on a Saturday, or just relaxing at home instead of changing your oil and wasting hours of your precious time at a shop or dealership? Change your oil to Amsoil! Make the switch today and not worry about changing your oil for a year or up to 15,000 miles. Amsoil is a high tech formula and has been around for over 40 years! Made in the USA too! Other synthetics are ok but Amsoil leaves them way behind! Order your oil and filter today! Also coolants and synthetic transmission fluid is available for your car or truck. Don't risk damaging your transmission because that is very costly.
