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What to do with compressor ac oil?

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    mike1 started this thread.
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    What to do with compressor ac oil?

    I have some sitting in the shed in a bucket. What do I do with it ? Take it to a auto place?. What type of oil is it?. Thanks



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    I don't know what kind of oil they use for the compressor but i do know it's suitable for a waste oil fired hot air furnace.

    That's how some of the repair garages around here heat their shop in the winter.

    Our Freon removal guy pumps out both the oil and the Freon with his rig. He was saying that the oil he collects goes back to the shop for heating as well.

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    Refrigeration compressor oil, if the oil is clean and unburnt I keep a gallon on hand for oil top up's and oil changes on my air compressor.

    Depending on the manufacture, compressor could be either a synthetic or mineral oil, the latter has been the choice for refrigeration compressors and air, makes for a good cutting oil when drilling metal or using the metal lathe.

    When I had the waste oil hot water boiler I used any and all types of oil for fuel. The boiler was a PITA, required a supply of compressed air and the filters needed constant cleaning. Many times would come out to a cold shop because the burner had shut down during the night.
    Last edited by alloy2; Yesterday at 11:41 PM.

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    mike1 started this thread.
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    Quote Originally Posted by alloy2 View Post
    Refrigeration compressor oil, if the oil is clean and unburnt I keep a gallon on hand for oil top up's and oil changes on my air compressor.

    Depending on the manufacture, compressor could be either a synthetic or mineral oil, the latter has been the choice for refrigeration compressors and air, makes for a good cutting oil when drilling metal or using the metal lathe.

    When I had the waste oil hot water boiler I used any and all types of oil for fuel. The boiler was a PITA, required a supply of compressed air and the filters needed constant cleaning. Many times would come out to a cold shop because the burner had shut down during the night.
    Cool oh wow cold building is never good��. I wonder if it's good to use on sawzall blades?.

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    Quote Originally Posted by mike1 View Post
    I wonder if it's good to use on sawzall blades?.
    It probably is. Alloy was saying it's good for use as cutting oil when he's drilling metal or using the metal lathe.

    I was wondering if the refrigeration compressor oil had some kind of mineral oil base. It's a lot like brake fluid and the hydraulic oil we use at work for our hydraulic machinery.

    The trash compactor oil is over $ 80.00 for a five gallon bucket nowadays. I looked up refrigeration compressor oil yesterday and that was over $ 1,200.00 for a five gallon pail. You would think that it would be worthwhile to collect and re-process the refrigeration oil at that price.

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    Quote Originally Posted by alloy2 View Post
    When I had the waste oil hot water boiler I used any and all types of oil for fuel. The boiler was a PITA, required a supply of compressed air and the filters needed constant cleaning. Many times would come out to a cold shop because the burner had shut down during the night.
    The modern hot air furnaces i've seen are pretty reliable. We had one in a large municipal garage i was working out of years back. Memory is a bit vague but i think the main issue to work around was that the used motor oil was thicker than conventional #2 fuel oil. There weren't any air compressors involved but there might have been a pre-heater to thin the oil out before sending it to the burner.

    Another thing that's changed over the years is that the fuel pumps on the burner these days run at much higher pressures. That atomizes the fuel better as it's forced through the nozzle. That gives you a cleaner burn and there's less chance of the furnace sooting up on you.

    The other difference is the igniters. Just like a spark plug .... it's electronic ignition nowadays. It's a more reliable system than the earlier transformers from back in the day.


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