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On the coolant reservoir. This is a plastic reservoir toward the back right of the engine compartment.
Open the 1994 Regal petcock and drain the old coolant into a pan. The coolant is toxic to animals so dispose of properly. Close the petcock when the fluid stops draining. Fill the coolant through the radiator cap opening, using the proper type of antifreeze.
Dexcool
dexcool its the orange colored coolant
Water
Take it to a mechanic shop. Preferably local
Genuine Subaru Long Life Coolant P/N SOA868V9210.....
Red, 5 year, HOAT type
It bleeds automatically. There is no bleed valve or screw and no bleeding is necessary.
Water
The 1994 Pontiac Grand Prix can use any SAE certified coolant. In normal climates, the coolant can be mixed half-and-half with water.
r-134A