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Depends on refrigerant type and compressor model Posted by JerseySaab [Email]  (#666) [Profile/Gallery]
(more from JerseySaab) on Mon, 3 Jun 2013 11:00:20
In Reply to: AC compressor oil?, Noel, Mon, 3 Jun 2013 06:29:21 Members do not see ads below this line. - Help Keep This Site Online - Signup |
Sounds like you have a slow leak, chances are you haven't lost much oil. Unfortunately the only way to know for certain how much is in the system is to dump/flush it all out and replace it! There are rules of thumb used for adding oil when replacing individual components.
The type of oil used depends on the type of refrigerant and the compressor model. Assuming your 9000 is a later one with a factory R134a AC system, if you have the Sanden compressor then PAG-ISO 46 oil is required. If you have the Seiko-Seiki compressor then you would use PAG-ISO 100.
Of course just to make things interesting, if it's an aftermarket compressor rather than OEM unit go with the manufacturer's recommendation, there would usually be a sticker with the specs. (The aftermarket replacement for my 9000's Sanden compressor specifies to use PAG-ISO 100 rather than 46, confirmed by manufacturer tech support.)
Early 9000 models with R12 AC systems would use the old-style mineral oil unless they have been converted to R134a, in which case Ester oil would be used. (R12 systems using hydrocarbon refrigerants such as Envirosafe or Duracool continue to use mineral oil.)
Refrigerant Oil Technical Bulletin
, Mon, 3 Jun 2013 11:00:20 <-- Viewing This Message
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