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York Compressor comes with PAG only #5135983
06/16/19 06:32 PM
06/16/19 06:32 PM
Joined: Apr 2011
Posts: 3
Orange County, CA
Beach_dude Offline OP
Beach_dude  Offline OP

Joined: Apr 2011
Posts: 3
Orange County, CA
I'm needing to fully flush the PAG oil that comes with York compressors.

What I've traditionally done is simply drain, fill with mineral oil, shake around, attach a drill to the compressor, turn it over for a few seconds at high rpm, flush the input/output ports with mineral oil, and repeat several times.

However, when I've torn apart the systems, there's always residue of two oils in the lines.

Also, I don't want to have to tear apart the compressors to flush with a solvent to let them dry.

Is there a flush that anyone can recommend that won't leave a residue, jack up the piston rings, etc, for an R12 system?


Last edited by Beach_dude; 06/16/19 06:33 PM.
Re: York Compressor comes with PAG only [Re: Beach_dude] #5135992
06/16/19 06:44 PM
06/16/19 06:44 PM
Joined: Aug 2017
Posts: 763
WY
sloinker Offline
sloinker  Offline

Joined: Aug 2017
Posts: 763
WY
Why not use alcohol to flush the system? Pump it in and out of the condenser/evaporator and lines? Then covert the whole system to PAG oil? When we flush our Hydrogen monitoring systems on our generators during maintenance outages we use about 20 gallons and just pump it in and out after circulating it for a day. I suppose you could just flush the compressor but alcohol isn't much of a lubricant and you may damage it.

Re: York Compressor comes with PAG only [Re: Beach_dude] #5136008
06/16/19 06:53 PM
06/16/19 06:53 PM
Joined: Apr 2011
Posts: 3
Orange County, CA
Beach_dude Offline OP
Beach_dude  Offline OP

Joined: Apr 2011
Posts: 3
Orange County, CA
That's the issue with using something like alcohol... It was destroy the compressor.

As for why not use PAG, because it's an R12 system.

Re: York Compressor comes with PAG only [Re: Beach_dude] #5136019
06/16/19 07:04 PM
06/16/19 07:04 PM
Joined: Jun 2003
Posts: 19,208
Apple Valley, California
Chris142 Offline
Chris142  Offline

Joined: Jun 2003
Posts: 19,208
Apple Valley, California
Use ester oil. Its compatible and mixes with any left over pag or mineral oil. If your really concerned put ester in it, shake it and pour it out. Capacity is only 10oz.

Last edited by Chris142; 06/16/19 07:06 PM.

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Re: York Compressor comes with PAG only [Re: Chris142] #5136023
06/16/19 07:08 PM
06/16/19 07:08 PM
Joined: Apr 2011
Posts: 3
Orange County, CA
Beach_dude Offline OP
Beach_dude  Offline OP

Joined: Apr 2011
Posts: 3
Orange County, CA
Ester is only compatible with R134a, not R12.

There would still be a residue of ester in the system.

Re: York Compressor comes with PAG only [Re: Beach_dude] #5136062
06/16/19 07:52 PM
06/16/19 07:52 PM
Joined: Jun 2003
Posts: 19,208
Apple Valley, California
Chris142 Offline
Chris142  Offline

Joined: Jun 2003
Posts: 19,208
Apple Valley, California
Originally Posted by Beach_dude
Ester is only compatible with R134a, not R12.

There would still be a residue of ester in the system.

Wrong! Every r12 car I work on gets Ester. It even says its OK for r12 right on the bottle. Ester is what you use when retrofitting to r134a as its comparable with all pag, mineral oil and r12 or r134a refrigerants that may be left in the system.

Screenshot_20190616-174756.png

02 Wrangler traveler sae30
87 F250 Valvoline 15w40
07 fjcruiser Chevron 10w30
Z400 castrol T 10w40
Can am maveric edge 5w40
57 case tractor Chevron sae30
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