Quote:
Originally Posted by ah-kay
There is no problem using R134a.
1) Fill the compressor with 8oz of Ether oil. Pag oil is OK but it is better with Ether as the system was using R12 before and has mineral oil. Ether Oil mixes better with the old oil unless you can purge the mineral oil completely.
2) Put 2 oz of oil in the rec/drier. It is not necessary but some people recommend it.
3) Pull vacuum down to 20-25 hg or better and make sure it holds for a few hours, or overnight.
4) Charge with R134a.
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There is presently a worldwide shortage of
Ether Oil!!! You won't find it anywhere. All the better reason to stick with mineral oil and R-12. And since water boils at 130*F at 25" Hg, I would recommend pulling a bit more vacuum than 20-25."
And one more reason to use R-12: you will actually be able to tell when your a/c is on!!!