Automotive Air Conditioning Information Forum

I just finished flushing my system as the previous owner mixed oils in a bad r12 to r134 conversion.

I have a fresh compressor, new drier, new POA and new hoses.

I plan on using r12.

Given this would you recommend using mineral oil and being locked into R12 or taking to opportunity to use ester oil so that down the road I could convert to r134 if needed.

Thanks!
Ed

Oil would still be contaminated with R12. So a proper flush and drier change would be needed before swapping refrigerants.