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Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Tyson509, Apr 25, 2018.
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Failed oil cooler
leaking cylinder liners
air compressor
injector cups
head gasketShooterK2 Thanks this. -
Exactly. Oil cooler would be where I would start.
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How bout' dropping the pan and pressurizing the cooling system? That's where I would begin. Why guess?
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oil cooler failure will put oil in the coolant due to the pressure difference, not the other way around.. but definitely drop the pan, do thetpressure test..so you don't waste your money like I just did with my isx. Currently scratching our heads on this one.
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Dex, coolers can fail in such a way that when the engine is running and oil under pressure the oil doesn't leak into the coolant, but when shut down the coolant is hot and still under pressure and can leak into the oil.
Klleetrucking and Goodysnap Thank this.
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