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Cat Man
Cat Man, Caterpillar Engine Expert
Category: Heavy Equipment
Satisfied Customers: 8346
Experience:  23 Years Caterpillar Engine experience.
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have c15 just rebuilt oil coming out of all 6 exhaust ports

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have c15 just rebuilt oil coming out of all 6 exhaust ports will the rings seat in time or should i tear down an replace

Hi. Thanks for using JA! I will try and help you out.


They should seat after the engine has been out under a good load. I would not go back into the engine until the engine is loaded.


Has it been loaded yet?


Also, did you use Cat parts or aftermarket parts?

Cat Man and 2 other Heavy Equipment Specialists are ready to help you
Customer: replied 4 years ago.

aftermarket rebuild kit ipd or mc b brother cant remember. motor has only run for about 30 mins in shop shut it off when seen oil coming out of exhaust


I see. Thanks for the information.


I was thinking it was an aftermarket kit. I have had two customers have the same problem. One of them put the engine on the dyno and loaded it and th oil stopped. The other customer pulled a loaded trailer and the oil did not stop. He had to go back in the engine. I would try and load the engine to see if the problem stops.

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