For a 1989 GM pickup, the recommended Power Steering fluid is typically GM-approved power steering fluid, which is often a Type A, Suffix A automatic Transmission Fluid (ATF). It's important to check the owner's manual or a service guide for specific recommendations, as some models may vary. Using the correct fluid ensures optimal performance and longevity of the power steering system.
It is important to maintain the fluid levels in a car, and it is important to put the right type of fluids in the car as well. A 1989 Chevy Pick up uses Dexron III transmission fluid.
regular everyday powersteering fluid will work or you can use a dex III transmission fluid. it will work the same and be cheaper.
10w-30
Motorcraft MERCON automatic transmission fluid is used in the power steering ( according to the 2000 Ford Explorer Owner Guide )
AF
10w30
dexron-mercon
Mopar ATF+4
75W90
DOT3
Depends on type of car or truck. four wheel drive pickup hard body
DEX III Transmission Fluid