i almost bought three 12oz cans of r-12 on ebay yesterday for 6.00 it goes pretty cheap on ebay

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have no worries.....President Obama swears "If you like your gun, you can keep it

My long-lived 16V.needed a lot of AC components replaced. Seemed like the time to convert to R134. compressor condensor etc. System didn't stay charged long. My new mechanic who became my father-in-law is a 34 year certified M-B tech. he identified the problem: AC lines all need to be metal inside the hoses. For not too much money a shop specializing in reman fo forklift hydraulic lines rebuilt the M-B lines with metal tubes inside. Worked like a charm.
Moral of.the story: you can't half-ass conversion from.R12 to R134.

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Charles Cleaver
1975 350SE + 1992 300CE-24 SportLine 5-speed + 2002 SLK320 6-speed + 1974 W114 280
1986 190E 2.3-16 (Decomm rear self-leveling suspension; Euro-code headlamps) sold
2004 Audi S4 6-spd - sold
1969 (2) and 1980 Porsche 911T, S, and SC - alas gone
1987 300SDL - Graf Spee; Euro-code headlamps; 16-inch 8-hole wheels - sold
1994 E420+(E500 suspension/E-code headlamps/PAD chip) sold
1968 250SE 4-speed (NICE car) - long gone
1962 220S 4-speed/column mount - long gone