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Old 09-27-2022, 06:16 PM   #1
Whiskey.Wilderness's Avatar
Join Date: Nov 2020
Location: Colorado
Posts: 52
Year: 2001
Coachwork: International
Chassis: 3800
Engine: T444E
Rated Cap: 29000 GVWR
Oil coming from air tank when drained

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

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Old 09-27-2022, 06:46 PM   #2
Bus Nut
fo4imtippin's Avatar
Join Date: Oct 2021
Location: Jax Beach, FL
Posts: 410
Year: 2003
Coachwork: BlueBird
Chassis: TC2000 28ft
Engine: Cummins ISB 5.9 24v, MD3060
Rated Cap: 14
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.
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Old 09-28-2022, 12:58 PM   #3
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flattracker's Avatar
Join Date: Sep 2019
Location: Bly Oregon
Posts: 451
Year: 1986
Coachwork: Crown
Chassis: Supercoach
Engine: Cummins 350 big cam
Rated Cap: 86 passengers?
Also look at replacement of the desiccator on your air dryer. It will be contaminated with the oil.
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