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A question about oil

Briandl79 on Fri June 04, 2010 7:09 PM User is offline

Year: 1997
Make: Chevy
Model: Cavalier
Engine Size: 2.2?
Refrigerant Type: R134A
Ambient Temp: NA
Pressure Low: NA
Pressure High: NA
Country of Origin: United States

I'm still learning but I'm helping a relative with his A/C system in his Cavalier. He has a leak in his accumulator so I'm going to replace it along with the orifice tube while I'm at it. The leak in the accumulator is big enough that it will begin to blow warm again within 24 hours of being recharged.

I know the accumulator wants 1oz of oil for the new part, but here's the question: How on earth do I have any idea how much oil is in the system or how much to add other than the 1oz for the accumulator? Does oil come out when the refrigerant leaks out?

TRB on Fri June 04, 2010 8:21 PM User is offlineView users profile

There is only one way to know the amount of oil in a a/c system. Flush it out and start fresh. In you case I would remove the accumulator and drill a hole in the bottom of it. Drain it and measure the amount. Add that amount and up to 1 ounce depending on how much else you think you could have lost via other leak areas. IE, I have a nasty residue on a cond fitting. I would add the entire 1 ounce plus what I drained.

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Contact: ACKits.com

Briandl79 on Fri June 04, 2010 9:46 PM User is offline

Understood. But am I right in assuming that the oil travels with the refrigerant and that if refrigerant leaks then oil does as well, or is it heavier or in such specific places that it doesn't leak out as easily as the refrigerant?

TRB on Fri June 04, 2010 9:53 PM User is offlineView users profile

If you have a leak you will lose some oil. That's why I suggest checking for signs of a large leak, aka oily spots. Refrigerant can leak leaving behind most of the oil if it's a small o-ring type leak.

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When considering your next auto A/C purchase, please consider the site that supports you: ACkits.com
Contact: ACKits.com

Briandl79 on Fri June 04, 2010 9:53 PM User is offline

Ok thanks. It certainly is a large leak if it leaks out in a day, but there are no signs of oil.

TRB on Fri June 04, 2010 10:00 PM User is offlineView users profile

Well then do as I mentioned. Drill out the accumulator and measure the oil. Replace that plus 1 ounce. You don't want to add too much or we will be having the same discussion as the other thread! Instead of sealer we will be dealing with odd pressures do to too much oil.

-------------------------

When considering your next auto A/C purchase, please consider the site that supports you: ACkits.com
Contact: ACKits.com

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