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10w-30
four stroke motorcycle oil .
i use 20w50 because its thick and lubes real nice
Hypoid gear oil 80w90
SAE 10w-40 Full Synthetic oil any major brand.
10w40 made for wet-clutch engines will work just fine
10w-40 ATV oil for wet clutches is always a safe bet for quads.
The oil capacity of the 1986 Eldorado is 5.5 quarts. The type of oil will depend on the mileage of the engine and the environment driven in.
10w 40
I had an 1986 Honda shadow VT1100 (loved it) and I ran mid grade with no problems. You can run 87 octane with no problems.
Just regular gas.
Regular unleaded 87 octane.