OEM Compressor Oil Viscosity

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OEM Compressor Oil Viscosity

Postby DPM » Sat Feb 11, 2006 6:40 pm

It's pretty clear that anything with R134 uses PAG oil, and capacities are easy to obtain. However, it is not always clear what the design viscosity is for a given system. For example: Toyota uses SP-10 or SP20; Nissan Type R, Type F (assume Toyo/Nissan designations are for two different viscosities, but what are they?); Honda/Acura ND-8,
There may also be some special oil blends that the OEM uses that have other anti-friction additives. My major concern is that I at least install the right oil viscosity that the compressor/system was designed to use.
Anyone have a cross reference list for OEM AC compressor oil designations that gives the oil viscosity? Thanks!
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In general...

Postby Nacho » Sat Feb 11, 2006 8:07 pm

PAG 150 is virtually used by GM vehicles with Harrison/Delphi compressors.
Most vehicles with NIppondenso, Motorcraft, and Scroll-type compressors use PAG 46. Pag 100, the other common viscosity is used by Sanden and Seltec.

SP10 = PAG 46
SP20 = PAG 100
ND8 = PAG 46

If you are not sure, you can always use PAG 100 (medium viscosity) oil, however. Although it won't harm the system, it is not recommended to mix viscosities.
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Postby Hal » Sat Feb 11, 2006 11:44 pm

Pehaps this will help you muddle thru the OEM's "secret "oil designations


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Postby DPM » Sun Feb 12, 2006 5:11 am


Thanks Hal!

And thanks to Nacho also for his reply. Reliable as ever.....

Hope others can benefit from this list. It's just what I was looking for.

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Re: OEM Compressor Oil Viscosity

Postby 510man » Mon Jul 25, 2016 7:03 pm

I found this conversion chart looking for the answer to the same ND8 question. The previous link in this string is no longer valid.


Hope it helps the next guy.

P.S. - Sure wish we could add PDF, JPG and a few other file attachments to a forum post to help good information to everyone. .
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