C3 AC Ester Oil

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Jan 24, 2016 | 07:21 AM

jez

Thread Starter

Intermediate

Joined: Jan 2007

Posts: 27

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C3 AC Ester Oil

HI,
I have a 1975 Corvette with the original ( large ) AC compressor I am converting to R-134A refrigerant my question is what grade of Ester oil should I use for the compressor. Many thanks in advance

Jan 24, 2016 | 08:17 PM

hotrodnick

Racer

Joined: Oct 2013

Posts: 362

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From: MARSHALLVILLE OHIO

Jan 25, 2016 | 12:27 AM

dugsgms74

Burning Brakes

Joined: Mar 2014

Posts: 904

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From: Crestline CA

I could be wrong but I thought Ester only came in one viscosity unlike PAG that comes in varied viscosity.

Jan 25, 2016 | 08:40 AM

mark79,80

Melting Slicks

Joined: Oct 2000

Posts: 2,142

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From: Englewood FL

Quote:

Originally Posted by jez

You might find the answer on the auto ac forum. Search thru the posts or post the question:

http://www.autoacforum.com/categories.cfm?catid=2

Lots of good information on this site.

Jan 25, 2016 | 04:29 PM

mikem350

Melting Slicks

Joined: Feb 2006

Posts: 3,105

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From: Sunrise FL

You don't HAVE to use ester oil if all the old oil has been removed from the system. Then use PAG suitable for the compressor.

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