ACDelco PF-47. Purolator Classic L10111. Fram Extra Guard PH3387A.
No relay on this model. You may have a plugged fuel filter or a fuel pump that is getting weak.
It does not have a cabin filter.
It requires 4.5 quarts of SAE 5W30 oil with filter change.
Under the car by the left rear wheel next to the gas tank.
IN THE BACK OF THE TRANS ON TOP OF PAN
If more than 1 gas filter were are they located on the 91 Cutlass Oldsmobile?
actually it's 4.5 qts. but if you just put in 5 qts. with a filter change you will be fine.
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.
under car in the back by gas tank
If a 4 cyc, on the passenger side of the engine, seen from the top.