4-4.2Litres
SpIII
A 1998 Oldsmobile 88 takes ATP automatic transmission fluid. This is sold in most places that carry transmission fluid, or you can buy it through a dealer.
AF
if the transmission does not have a dip stick it is probably atf
You check and add fluid at the same place.
Dextron/Mercon III will work for that transmission
When changing the transmission fluid and filter of a car, it is best to know how much transmission fluid goes back into the car. The 1998 Bravada takes close to 12 quarts of transmission fluid to fill.
V.W. recomends you use d.o.t. 3 brake fluid
The 1998 Ford Taurus Owner Guide shows : Motorcraft MERCON - V , automatic transmission fluid For the AX4N and AX4S automatic transaxles
The automatic transmission uses ATF+4. Do not use Dextron/Mercon.
Motorcraft MERCON automatic transmission fluid is used in the automatic and the 5 speed manual transmission ( transaxle ) according to the 1998 Ford Contour Owner Guide
The 5 speed manual transmission in a 1998 Ford Ranger ( in North America ) takes Motorcraft MERCON automatic transmission fluid