I used stuff called Freeze-12, it is an EPA-approved alternative to R12 (uses the same lubricating oil type) I got a couple years out of it. I blew an o-ring just recently and have not got the time to fix it again (besides, I will hurt the environment if I work on my own AC in Wisconsin, so I have to drive into Michigan in order to do it...)
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1986 GXL ('87 4-port NA - Haltech E8, LS2 Coils. Defined Autoworks Headers, Dual 2.5" Exhaust (Dual Superflow, dBX mufflers)
1991 Coupe (KYB AGX Shocks, Eibach lowering springs, RB exhaust, Stock and Automatic)
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