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How to determine type of oil in system?
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mrdap
New User
Jul 24, 2011, 9:42 PM
Post #1 of 10
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How to determine type of oil in system?
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Hello,
I have just acquired a 1967 Chevrolet Impala with factory AC (Reman A6 compressor). This vehicle has some of the most unusual adapter fittings on it, so I do not know what refridgerent or oil is in it. There are no notes or tags indicating R134, so I think it has R12. But here are pictures of the fittings:
Low Pressure
http://members.xxx.xxx/96/IMG_9292%20sm.jpg
Hi Pressure
http://members.xxx.xxx/96/IMG_9293%20sm.jpg
The first picture, low pressure, threads are regular (RH tighten) diameter is .5 in
The second picture, hi pressure, threads are left handed (LH tighten) diameter is .432 in.
The LP fitting had a blue cap, HP fitting had a red cap, but it has a left hand thread.
I am guessing that somebody may have been trying to use some kind of old guage set and may have attached these adapters, but I don't know.
At any rate, there is some pressure left, but I intend to remove the adapters, purge, install a new drier, evaluate and recharge. I want to know what kind of oil is in it.
Is there a simple way to determine what kind of oil is in the system?
I have a lot of equipment, vacuum pump, electronic scale, electronic leak detector, gauges, R12 and R134 drums, etc., but I do not have a gas analyzer.
Thanks in advance.
DAP
(This post was edited by mrdap on Jul 3, 2014, 5:32 AM)
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Hammer Time
Ultimate Carjunky
/ Moderator
Jul 25, 2011, 2:58 AM
Post #2 of 10
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Re: How to determine type of oil in system?
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Those look like r134 fittings but the ones used for hose connections and not the couplers that should be on the car. You need to just remove them and put the correct R134A coupler fittings.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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mrdap
New User
Jul 25, 2011, 3:49 AM
Post #3 of 10
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Re: How to determine type of oil in system?
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Thanks for the response, but these are not R134 fittings. The high pressure fitting has a LEFT HAND thread.
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Hammer Time
Ultimate Carjunky
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Jul 25, 2011, 3:50 AM
Post #4 of 10
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Re: How to determine type of oil in system?
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What's the big deal? You take them off and install the right ones, drain and flush the system.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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mrdap
New User
Jul 25, 2011, 4:45 AM
Post #5 of 10
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Re: How to determine type of oil in system?
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My question is:
"Is there a simple way to determine what kind of oil is in the system?"
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Hammer Time
Ultimate Carjunky
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Jul 25, 2011, 6:16 AM
Post #6 of 10
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Re: How to determine type of oil in system?
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Your answer is....no
There is no way at all that I'm aware of.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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way2old
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Jul 25, 2011, 4:56 PM
Post #7 of 10
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Re: How to determine type of oil in system?
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Those are adapters for A/C gauges to be hooked up. Not sure why someone left them on the system. More than likely it is still a R 12 system. Just a SWAG as to what the pictures are showing.
Being way2old is why I need help from younger minds
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Discretesignals
Ultimate Carjunky
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Jul 25, 2011, 5:33 PM
Post #8 of 10
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Re: How to determine type of oil in system?
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I have seen you make two posts with "SWAG" in them. What does that mean, Tom?
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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Sidom
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Jul 25, 2011, 7:13 PM
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Re: How to determine type of oil in system?
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Not sure bout W2Os dictionary but in my book it stands for Scientific Wild Ass Guess......
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way2old
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Jul 26, 2011, 4:19 PM
Post #10 of 10
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Re: How to determine type of oil in system?
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ZACTLY
Being way2old is why I need help from younger minds
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