Hi, Usually I use pag 46 on a Denso new compressor retrofit from r12 to 134a .However Toyota of Dallas uses ester on retrofits.Since ester mixes with both r12 and 134a without its molecule changing this would seem to be better. Flushing can not remove 100 percent of old fluids Anyone else using ester ? I can’t find on the Denso site if they allow its use or not. Mike.
Pag 46 or ester ac oil (1 Viewer)
- Thread starter Michael Hanson
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Hmm. I would stick with the PAG46 [ ND8] if possible. I don't think pag and poe mix very well. Unless you can flush all the old pag out.
Although a small amount of residual pag shouldn't hurt.
I doubt POE would harm the compressor.
Although a small amount of residual pag shouldn't hurt.
I doubt POE would harm the compressor.
- Thread starter
- #3
Ester is a highly stable molecule and r12 or 134a it is comparable with both . Mike
- Thread starter
- #4
Chemistry wise I see no problem ,unless I’m missing something. Mike
Yes POE [ester] oil is fine. It's just not recommended to mix with pag. As long as most of the pag is flushed out POE is the way to go.
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- #6
Thanks
It's been my understanding that no compressor manufacturers (except York) will warranty a compressor with ester oil in it. I'm told it doesn't offer the lubricating quality of either PAG or mineral oil.
- Thread starter
- #8
Interesting it’s fully synthetic and has Mobil 1 development. Very stable at low and high temperatures. Mike
