James L Posted October 20, 2020 Share Posted October 20, 2020 I have an o4 Mack vision I am getting oil in the air cleaner any ideas Quote Link to comment https://www.bigmacktrucks.com/topic/64635-oil-in-air-filter/ Share on other sites More sharing options...
Mackpro Posted October 20, 2020 Share Posted October 20, 2020 On the ASET AC engines the air compressor gets is fresh air from the air filter piping going to the turbo. When the engine is run with a dirty air filter the suction from the turbo is so great tgAt it sucks oil up past the air compressor piston rings and the oil settles in the air filter piping and mouth of the turbo intake . Usually it’s a thick tar like residue. Kinda normal actually. Mack had a couple of bulletins on it but I dont know if it helped any. Quote Link to comment https://www.bigmacktrucks.com/topic/64635-oil-in-air-filter/#findComment-462707 Share on other sites More sharing options...
James L Posted October 20, 2020 Author Share Posted October 20, 2020 Thanks I’ll keep a closer eye on that filter it’s on a manure spreader so it gets dirty quickly Quote Link to comment https://www.bigmacktrucks.com/topic/64635-oil-in-air-filter/#findComment-462718 Share on other sites More sharing options...
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