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  1. #1
    Join Date
    Aug 2006
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    Melbourne
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    Default What oil for air compressor?

    I'm planning to do an oil change on the compressor tomorrow as it has been quite some time since the last one was done.

    Was just wondering if hydraulic oil would be suitable as I have a drum of Shell Telsus ISO 68 sitting around. If not what is recommended?

    Thanks

    Sent from my SM-G935F using Tapatalk

  2. #2
    Join Date
    Jul 2016
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    Melbourne
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    35
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    Default

    In my neck of the woods the compressor is lucky to get a roof over its head let alone graded oil with no water or black bits in it!

  3. #3
    BobL is offline Member: Blue and white apron brigade
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    Feb 2006
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    Perth
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    7,183

    Default

    What is the compressor and what does your compressor manual say.

    Compressor oil for standard reciprocating piston pump compressors is usually ISO100 or 150

    68 is usually used in screw compressor type pumps

  4. #4
    Join Date
    Aug 2006
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    Melbourne
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    Default

    It is just your average Chinese piston type. 16cfm/3hp motor. I will look into other oils if the 68 is not heavy enough.

    Sent from my SM-G935F using Tapatalk

  5. #5
    Join Date
    Apr 2012
    Location
    Healesville
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    Default

    SAE 30, the same oil as you put in a Briggs & Stratton lawn mower engine.

    cheers, shed

  6. #6
    Join Date
    Jun 2007
    Location
    Vic
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    48
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    544

    Default

    I have the C12 McMillan and I have been running 15w40 for the last 5 years

  7. #7
    Join Date
    Sep 2012
    Location
    York, North Yorkshire UK
    Posts
    6,439

    Default

    Hi Guys,

    I just use the same 5 - 40 sae that I put in the car. The manual makes no mention of the oil other than for the sight glass.
    Best Regards:
    Baron J.

  8. #8
    Join Date
    Aug 2009
    Location
    Sydney, NSW, Australia
    Posts
    1,836

    Default

    I use specific air compressor oil from bunnings its a cheap brand Western or something been a year or two since i changed the oil

    Some crack up replies in this thread lol made me laugh

  9. #9
    Join Date
    Aug 2006
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    Melbourne
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    Default

    I think I have some Penrite 4 Stroke SAE30 small engine oil here.

  10. #10
    Join Date
    Apr 2011
    Location
    Sydney
    Posts
    99

    Default

    As others have said, officially it’s probably iso 100. I run iso 150 in mine which is as per the manufacturers specs - pilot k50.

    FYI - ISO oils have a claimed viscosity at 40c whilst engine oils are at 100c.

  11. #11
    Join Date
    Apr 2012
    Location
    Healesville
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    2,129

    Default

    I had never heard of using ISO 100 in small air comps so l had a bit of a search and learned something new, thanks fella's.
    Evereywhere i have worked, for 45 yrs, all recipricating comps were serviced with SAE30.
    The reason for using SAE30 engine oil is because it is a non detergent oil.
    This you toob clip explains why you need to use non detergent oil in your comp. https://m.youtube.com/watch?v=4XTss11zs58#

    cheers, shed

  12. #12
    Join Date
    Aug 2006
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    Melbourne
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    Default

    I might just buy the proper stuff, only real reason I didn't want to buy it as I have too much oil sitting around. Now to find somewhere that stocks ISO 100 and then decide if I should buy 1lt or 5lts of it. hmm.

  13. #13
    Join Date
    Apr 2012
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    Healesville
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    Default

    SAE30 is the proper oil, or if you want you can use ISO 100.
    It wont matter either will do.

  14. #14
    Join Date
    Jun 2012
    Location
    SA
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    1,649

    Default

    Quote Originally Posted by shedhappens View Post
    SAE30 is the proper oil, or if you want you can use ISO 100.
    It wont matter either will do.
    My 7.5 CFM Swedish BIAB has the oil viscosity requirement on the data plate : SAE 10.

    All I have ever done in the 45 years I've owned it from new is top up with Dexron 3 ATF (which is approx SAE 15). Still runs like new and uses very little. Oil is still perfectly clean and clear with no sign of water emulsion.

    No mention of what type of oil to use. ATF is high detergent oil and even though true compressor oil is low detergent, I asked our refrigeration guy at work what to use and he said just put in some ATF. So i did

    Edit: I just found this article which backs up what he said: https://www.machinerylubrication.com...compressor-oil
    The worst that can happen is you will fail.
    But at least you tried.



  15. #15
    Join Date
    Apr 2012
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    Healesville
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    Default

    I dont suppose that you realise that it is a LOT colder in Sweden.
    Machinery, and car engines run lower viscosity lubricants in colder climates.

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