Does the ;1990 olds cutlass supreme use the "new" freon or the "old" freon in factory a/c system
This car uses r12 freon that is the old stuff but you can have your system converted over to the 134a.
1990 models had R-12.
To change it to R-134a all you have to do is replace the accumulator, the orifice valve and the high and low side valves.
But first you have to make sure all of the traces of old oil are flushed out of the system. you can not mix R-12 Oil(mineral) with R-134a Oil(sinthetic)
Does the 1990 Olds cutlass Ciera Supreme have a thermostat and where
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