if i remember correctly, some of the early r12 to 134a conversion kits came out with the green o-rings to replace the r12 o-rings that 134a would eat up--also some 'barrier' ester? oil-supposed to coat the hoses to stand the 134a-[part of the freeze 12 mixture is 134a, btw.] used to use a lot of freeze 12-ran it 10% less than capacity--had pretty good luck with it--those were bad years in automotive a/c. compressor failure big time until they got the oils & other things figured out.
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Today's Featured Article - Talk of the Town: Diesel Vs. Gasoline - by Staff. Another neat discussion from the Tractor Talk Discussion Forum. The discussion started out with the following post: " I am in the market for an older tractor (to be read... cheap). I have been told a diesel holds up better than a gasoline engine as far a wear, tear, neglect and abuse. Since I am looking at older tractors that have probably been through it all, is it better to buy diesel? I do expect to have to do a good bit of work on
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