2013 isx15 cm2350 black oil like substance in Air Intake again

[GhostHauling]

(06-01-2022 )Rawze Wrote:  that is the air compressor inlet. Looks to me like your air compressor is bleeding oil?.

Also.. why is there pollen inside the intake piping?.. What brand of intake air filters are you using? because they seem not to be doing too good of a job keeping contaminants out of the engine.

That makes allot of sense I found oil or that black crap on the air pressure regulator on the cab. And I’m not sure the brand I want to say fleetguard because that is the filters I use. I get them from the stealership. I’ll look into that. I’ll say it’s possible some contaminants got into the piping after I pulled them off but I’ll get a new filter. What brand do you recommend?