Hi.

I just changed out the o-rings and end washer on my piston valve cps blackmax manifold set. The instructions said to oil the o-rings after installation, but had no suggestion as to what oil to use. I mostly do r134a, so my first though is to throw some POE on there, but, that's just going to get contaminated with moisture, then migrate...

Anyone have a suggestion for an oil that is resistant to migration?

BTW, I know people like to bag on CPS, but it's been a good set to me, and the repair kit was under 10$ shipped. Can't beat that!

Thanks!