[Shop-talk] Compressor Oil

[David Scheidt]

> On Jan 6, 2024, at 09:00, old dirtbeard <dirtbeard at gmail.com> wrote:
> 
> 
> HI Moose,
> 
> Surprised to hear that there was sludge in the oil when you drained it; I have not experienced that when changing my oil.
> 
> I also thank you for posting this message as it reminded me that I have not changed the oil in my compressor for a long time and need to look for oil. 
> 
> I saw this Quincy article on compressor oil options, but it does sound like compressor oil mainly needs to be non-detergent to eliminate carbon build-up (I never could understand why automotive engine oil would create carbon in a compressor which I have to believe runs at a much lower temperature than a compressor, but that is their statement), but also:

Detergent oil keeps debris is suspension so it can be removed by the filter. If you don’t have a filter (and compressors don’t), you want a non detergent oil, so the debris can settle into the crank. 

I strongly suspect moose’s sludge is a by product of condensation and short run time that doesn’t get the oil hot enough to drive it out. 

Frankly, compressors are low load, and modern oils so good, any compressor oil is good enough. If the manufacturer makes it hard to buy from them, I take that as a sign they don’t want my money, and spend it elsewhere.  It’s the third decade of the 21st century, if they don’t have a way to buy with a credit card, well, they clearly aren’t interested in selling anything. 


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