I need to get smart on the oils. For about ten years, The White Whale was fine with PAG-46 and r134a or with EnviroSafe 12 (propane / butane).
I have sent an email to the Envirosafe folks to see which oil they recommend. ------------- Max Charleston SC On Sun, Aug 11, 2019 at 2:26 PM Mitch Haley via Mercedes < [email protected]> wrote: > I believe oil which isn't refrigerant miscible leaves the compressor and > doesn't come back. > The refrigerant is supposed to carry it back to the compressor. > It probably ends up internally insulating the condenser. > Your 134A will circulate the PAG, but I think the mineral stuff is just > getting in the way unless/until you put some R12 or propane in there. > > > On August 11, 2019 at 2:07 PM Meade Dillon via Mercedes < > [email protected]> wrote: > > > > > > Does the PAG-46 oil circulate with the refrigerant, and the mineral oil > > mostly remain in the compressor? > > > > I'm wondering if I should just remove and drain the compressor, maybe > flush > > out the condenser, install new drier and correct PAG-46 oil, re-charge > and > > go. > > ------------- > > Max > > Charleston SC > > > > > > On Sun, Aug 11, 2019 at 8:25 AM Meade Dillon <[email protected]> > wrote: > > > > > I think I've done something wrong. > > > > > > Yesterday I finished re-sealing the AC compressor for The White Whale > > > (1987 300TD). My interpretation of the FSM is that 50cc of oil were > > > required, due to the sudden loss when the shaft seal failed, and > replacing > > > the drier, and draining all old oil from the compressor. > > > > > > For some reason, I decided to use mineral oil, thinking that was what I > > > had used last time I did the major flush and re-fill of the system. > > > Wrongo, pretty sure this morning that the system had PAG-46 in it. No > idea > > > what the viscosity of the mineral oil is, but I'll bet it is 100. So > I've > > > got a blend of oils in the system. Mostly PAG-46, but also mineral > oil of > > > unknown weight. > > > > > > Then I discovered that I did not have sufficient Envirosafe (propane / > > > butane blend) so I had to run out to Wal-Mart and get a few cans of > r134 > > > (yuck!). > > > > > > I've only put in two cans / 24 oz of R134, and pressures are plenty > high. > > > Did not have time for a test drive last night but vent temperatures > were > > > only getting down to about 68 deg F with the car sitting in the drive. > > > > > > I have a feeling I'm going to be flushing the whole system and starting > > > over. > > > ------------- > > > Max > > > Charleston SC > > > > > _______________________________________ > > http://www.okiebenz.com > > > > To search list archives http://www.okiebenz.com/archive/ > > > > To Unsubscribe or change delivery options go to: > > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > > _______________________________________ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
