IIRC, the label on mine says factory fill with R12 is 2.something lbs. And, I believe, with R134 you're supposed to put in 85% of the R12 charge. So, I'd say that 40oz is probably too much. What kind of pressures are you getting, low and high?

Richard <img src="/forums/images/graemlins/patriot.gif" alt="" />

Had an 89 Isuzu Pickup
Had a 94 Mitsubishi Eclipse
84 Honda XL185S
Had an 89 Isuzu Trooper w/ 3.4 V6
01 Toyota Tundra SR5 V8 4Door Access Cab
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