All vehicles were mandated by the US Government since 1994 to use R-134a.
All
R134a
R134a
R134a
R134a
R134a
A 1998 Buick would use R134a refrigerant.
A 1998 Mercury would use R134a refrigerant.
R134aR134a
R134aR134a
newer vehicles, such as a 99 jeep, all use 134-A refrigerant.
Yes, all vehicles made after 1994 are R134a freon