Hello Benzmac, My 89 190e 2.6 has a small leak. Filled it up last year Memoriable day and now it's just on the cool side. I'm wondering how best to fix it. Convert to 134a and run stop leak... run stop leak for r12 and refill... maybe I can find the leak and fix it... When I check around the AC shops everybody warns me about the condensor and many many hundreds of dollars to fix/replace.