How much freon in a 1976 Cadillac?
There's no single answer to how much freon (R-12) was in a 1976 Cadillac. The amount varied depending on the specific model (Coupe deVille, Sedan deVille, Fleetwood, etc.) and the size of the air conditioning system installed. The only way to know for sure would be to consult the vehicle's owner's manual (if you have it) or a Cadillac service manual for that year and model. Even then, the amount listed would be the *factory fill*, and some refrigerant may have been lost over time due to leaks.