Once the cooling system has had time to depressurize, open the radiator cap and pour your coolant in.
Radiator
"I don't know" - Branson Maynard
Dexcool, I just had to add coolant (reservoir was bone dry!) to a 2007 Aura
The engine coolant level is low. Add more and the pump will be able to move coolant at the lower rpms.
how to add coolant to 1991 lumina?
That will mess up your speedometer and odometer. It will look like you are going faster than you are (not a real problem) and your miles will add up faster (a problem when you want to re-sell).
The overflow resavour is where you add coolant
You add coolant to a C240 at the radiator overflow tank. This allows the radiator to suck in coolant as needed when hot.
no cap, just the coolant tank, add to this to add coolant../
You should not mix colors or brands of coolant.
The coolant add/overfill jug is on the left side of the motor when your looking at it. Add coolant up the closest line towards the top, and only when the engine is cold.
Add coolant to the full cold line on the coolant reservoir when engine is cold.