In '80, Pontiac introduced the new R4 A/C compressor to some of its Trans Ams and Firebirds. Weighing in at nearly half the mass of the long-in-the-tooth A6 compressor, the R4 continued in the F-body ...
OEMs, distributors, contractors, and technicians all have their eyes on December 31. That’s the date, per U.S. Environmental Protection Agency (EPA) regulations, after which newly manufactured or ...