by Jules
(Georgetown, CO.)

Ingersoll-rand p185, can Automatic Transmission Fluid be used in screw type compressor?

Fluid in sight glass is red, is that compressor oil or ATF? Need unit for blowing out cracks in pavement. Looking to do complete service as engine oil and air filters dated 2008, I doubt if anyone has ever serviced air system, separator, filters etc.

Any thoughts?

Old Ingersoll Rand P185 air compressor

Old Ingersoll Rand P185 air compressor

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ATF
by: Doug in s.d.ca.

Used to be common.

IF you’re pretty sure that’s what it is, I’d stick with it.