a blown head gasket If it's a Quad 4 they had problems with warped (aluminum) cylinder heads. Can often get by with shaving the head or if necessary, rebuilt heads are $250-$300. The longer you wait the more likely you will have to get another head.
On the oil pan, bottom of the engine.
whys smoke coming from oil pan in a 1994 oldsmobile royale
The oil sending unit on the 1994 Oldsmobile Cutlass Supreme is located on the top of the engine compartment. It is directly above the oil filter.
4.5 Qts
Possibly burning oil. Check compression.
CHECK YOUR OIL LEVEL
you would use 5W-30W have the same car
pop the hood, off to the left, look under serp. belt. you should see it hiding.
It is either an intake gasket, or head gasket most likely...bring it in to a mechanic.
When changing the oil or oil filter of a car, it is important to know the cars oil capacity. For a 1997 Oldsmobile Bravada, its oil capacity is 4.50-4.75 quarts of oil.
The 1999 Oldsmobile Aurora oil filter can be found on the left-hand side of the engine. The oil filter will be near the oil pan.
The recommended oil for an Oldsmobile Alero is SAE 5W-30 oil. If you live in a state that does not get freezing temperatures, 10W-30 is acceptable.