For a 1972 Chevy truck, the type of fluid you need depends on the specific system. For the engine, use conventional or synthetic motor oil with a viscosity of 10W-30 or 10W-40. The transmission typically requires Dexron automatic Transmission Fluid, while Power Steering systems often use either ATF or power steering fluid specifically designed for older models. Always check the owner's manual for the most accurate specifications.
Automatic? Read the information on the transmission dip stick, it will tell you what type of fluid to use. Standard? Use Mercon.
Dextron-II
Dextron II--ATF
R134a
R-134a
dot3
Dextron II fluid.
You can use ATF (automatic transmission fluid)
Any DOT 3 fluid. Brand makes no difference.
the transmission fluid for your truck is dex/merc
Dextron III
DOT 3