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O-Ring Oil Type?

smithly on Sat April 25, 2015 9:50 PM User is offline

Year: 2006
Make: Honda
Model: Accord LX-SE 4 Dr
Engine Size: 2.4L
Refrigerant Type: 134a
Ambient Temp: 75F
Pressure Low: 25psi
Pressure High: 150psi
Country of Origin: United States

My AC system takes PAG46 (Denso - 8) as I understand it. I may have to replace the expansion valve. When I do, I will of course replace the drier. While I have it open and have the O-ring set, I was considering replacing all my O-rings on my 10 yr old system. I don't have any PAG oil on hand and don't really need any just for the expansion valve. I do have some Ester Oil on hand. Would that be ok to put on O-rings only? Is Ester Oil a bad mix for PAG in small amounts?

Dougflas on Sat April 25, 2015 11:33 PM User is offline

Ester oil will be fine on o-rings. I read your other post. Your TXV seems fine. You're most likely low on refrigerant. Add 4 to 6 oz and retry.

mk378 on Sun April 26, 2015 12:08 PM User is offline

When you open a system, the o-rings on the line between the compressor and condenser could be pre-emptively replaced, because that part runs hot and hardens the rubber making them prone to leak. The rest of the system you should take an "it isn't broken" approach to.

smithly on Sun April 26, 2015 4:54 PM User is offline

Thanks for the help!! I will take your advice.

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