The factory recommends a 50/50 mix of clean water and Dexcool or similar (the "orange") stuff. This mix will protect the Northstar for up to 5 years. If you ever have used the "green" stuff (e.g. Non Dexcool) then you can go back to the Dexcool, but you'll have to change every two years or so.
Black Cadillac eldorado
dexcool antifreeze it is orange.
10w30
Premium Unledded fuel.
R134-a
it take dexcool its a orange antifreeze that is approved by gm.
Any type of SAE certified antifreeze can be used in your 1992 Cadillac Seville. The antifreeze should be rated for -35 degrees to 120 degrees.
It takes the green Antifreeze
dex-cool the orange one
R134a
10w30 Your oil cap on the engine block will have it printed.
Dex cool