Any recommended AC Compressor replacements?

[Ethan Rode]

For a new condenser, evaporator, hoses, or accumulator, replace it with 2oz of oil for each component. Again, this is when it's either flushed or brand new. As for the compressor, if it's new from Sanden, it'll be filled with PAG which is compatible with r134a. If you're looking to use R12, you'll need to replace that PAG with mineral oil. To put the right about in the compressor, open the plug on the compressor and drain the prefilled oil into something you can measure with, like a Pyrex measuring glass. Then simply replace the same amount with mineral oil and now you can run a r134a compressor with R12. The only difference is the prefilled oil. Everything else is the same.

Important to note: mineral oil is not compatible with any type of PAG oil. Mineral oil can't be dissolved in R134a, likewise PAG oil dissolves poorly in R-12. Ester oil works in both. Ester oil is a transitional lubricant, and must be installed if you're re-using components, but changing refrigerants.

[kings1527]

Important to note: mineral oil is not compatible with any type of PAG oil. Mineral oil can't be dissolved in R134a, likewise PAG oil dissolves poorly in R-12. Ester oil works in both. Ester oil is a transitional lubricant, and must be installed if you're re-using components, but changing refrigerants.

If you’re changing refrigerant types, it’s definitely best to flush the system completely. If you already have a parallel flow condenser, you won’t be able to flush it. There is zero harm with the nominal amount of PAG left in the compressor mixing with mineral oil if someone is staying with R12. Not sure if you were referring to that.