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  #1  
Old 07-05-2002, 05:58 PM
Dirty Ern
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How can I add R-12 oil?

In the process of sticking a compressor on my 300CD (it came off my donor car), I spilled a small amount of oil. No way to tell for sure how much. I'm guessing an ounce maybe. I have an oil pump for pumping refrigeration oil into big tonnage units but don't have a clue on getting a small amount into a car system.
Any help?

Thanks Ernie
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  #2  
Old 07-05-2002, 11:14 PM
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Join Date: Sep 2001
Location: central Texas
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You can put less than a full can into the system just the same way you would put only some coolant ,, by weighing it while feeding it through the valve and stopping when it gets to the proper weight....

Did I mention you can buy pressurized cans of oil ? Just like freon cans... same top on them so you can use the same lines and fittings....

However, some types of compressors also have a resorvoir and use a dip stick to check for the correct level... you have to make your own dip stick and they give exact bend and radius for what you need.... If you want to guess how much your putting in you can just stick it into the filler hole on the side... there are two for Yorks for instance because it can be mounted in either of two positions...
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  #3  
Old 07-06-2002, 10:17 AM
Dirty Ern
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The system is pressurized, so the pressurized can will be the way to go, if I can just find it. I looked at Kragen and Autozone last nite and neither one had it. Thanks for the reply.
Ernie
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  #4  
Old 07-06-2002, 09:30 PM
LarryBible
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You cannot legally buy an R12 oil charge without a 609 certificate. I used to buy a gadget that injected 2oz. of oil through the low side port. You hook it up then use a wrench that pushes a piston and forces in the oil. I used to get this at Auto Zone. I have not used one in ages. I don't know if they are still available.

Good luck,
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  #5  
Old 07-06-2002, 09:53 PM
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Join Date: Sep 2001
Location: central Texas
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I think my 134 changeover kit had an oil charge for both PAG and ESTER oil.... one of which ought to be compatible with r12 ??????? My parts place just closed or I would call and see if they have the oil in a seperate can... but I think they do because I was looking at putting more than the kit had into a flushed compressor... Greg
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  #6  
Old 07-06-2002, 11:27 PM
Dirty Ern
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I went back to AutoZone to talk to the manager to see if he might know of something avaliable, he went in the back and came out with a typical card with a plastic bubble containing what at first looked like a clutch aligning tool. But it was the tool that Larry described. It contained .75 ounce ot R-12 oil. I thanked him and went back to the location where the A/C stuff was, and now that I knew what I was looking for, I found several other cards of the same thing, same part number, only these contained a full ounce. Not that big of a difference, but I grabbed one of them instead. They didn't ask for any kind of cert. By the way I also noticed 12 oz. bottles of R-12 Oil at Kragens.
Is the 609 cert the same as an EPA Universal Cert?
I'm going to give it a spin in the morning. Thanks to both of you for the help.
Ernie
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  #7  
Old 07-07-2002, 05:26 PM
LarryBible
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To buy the oil by itself does not require a 609. Only if it is an oil charge that contains some R12 in the can.

Leathermang,

You should not use PAG or POE (Ester) in an R12 system. There is a myth that Ester is compatible with the R12 mineral oil and some say that as long as you remove 50% of the mineral oil you can put in the other half as Ester and be okay in a retrofit. But, there is much evidence that this is not a good idea. In the case of an R12 system, the mineral oil is the best bet. Ester in a converted system seems a bit forgiving because of its compatibility with R134. In an R12 system, it would be a bad idea.

Have a great day,
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