Originally R-12 - should be converted to R134A
R134a
It came with R12 Freon. As R12 is cost prohibitive, have the unit converted to R134a refrigerant or a similar substitute.
A 1994 Buick Regal Custom uses 134a refrigerant, not freon.
The 1997 Buick Skylark uses R-134a refrigerant for its air conditioning system. This refrigerant replaced the older R-12 (Freon) due to environmental regulations and is suitable for vehicles manufactured during that time. When servicing the AC system, it's important to ensure the proper refrigerant type is used for optimal performance.
R134a
R-134a
Gool ol' Dexron.
Either a 2.3/2.5 4cylinder or a 3.0 V6
5w30 Your brand. Most are all the same
Century, Regal, Grand National, LeSabre, Electra, Skylark, Skyhawk
If it's an automatic, most likely a Turbo 350.
Was built for R12, can be converted to R134a.