Oil coming from air tank when drained

[Whiskey.Wilderness]

This is the first time its happened to us, we were draining the air tank and some water came out like usual but then we got a fair amount of what looks like oil coming out of it. Totally stumped
Have a T444e engine. Air suspension.

Any help or advice would be great. Thank you

[fo4imtippin]

Usually this means time to replace your air compressor with a reman.. they don't cost a ton with core trade in.. if you put this off, eventually oil will make it's way to brake chambers and things that oil will eventually wreck.



They are oil cooled and oil is moving past the seal into the air output.

[flattracker]

Also look at replacement of the desiccator on your air dryer. It will be contaminated with the oil.