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Ok guys so I had my motor rebuilt approximately 7,000 miles ago. Since then my truck has been burning oil and I can't figure out where it is going. New turbo so that's not the problem. Oil is coming out of the breather and covering the under side of the truck. More oil is burnt when on the...

They were cut because the previous owner beat the crap out of this thing... The head was cut first... Found out that the block needed cut too because the corner was warped... So previous owner managed to get this thing so hot that he successfully warped the block... After the head and block were...

Thanks guys... Apparently the company that rebuilt my motor didn't use the rings that cummins calls for. I think you are right about the blow by... We held it at a high rpm for about 5 minutes and so much oil built up that it blew the valve cover gasket. Calling tomorrow and telling them they...

I pressure washed the under side of the truck and it looks like the breather tube is where the oil is coming from... Any idea on what is causing this?

Its hit or miss. I can drive it for a few days and check it and it will be fine. Other times I check it and it used some.

Its a 5 speed. I took the truck 300 miles on a trip and burned nearly a gallon of oil. Then I drove about six hundred miles just back and forth to work for a couple weeks and no oil was used. If I am getting blow by when its under load, would I have oil coming out of the breather tube? The only...

When I say no oil I mean nothing anywhere on the underside of the truck.

There's no oil under the truck. I figured it was the turbo or the rings. New turbo and still happening... Nobody can figure this out. And the tube come right out of the front of the engine right behind the fan.

How can I tell the amount of blow by there is when the truck is under load? If that were the case would there be a lot of oil coming out of the tube?

I have a few drops from the rear main... Nothing out of the breather tube, no oil residue, and no blow by... I'm out of options. The only thing I can figure is that the piston rings havent seated since the rebuild because it's only been a few thousand miles. However if the rings were leaking I...

I have a 98. 5 cummins that is using a ton of oil. No white or blue smoke. Turbo replaced. Motor was recently rebuilt from the bottom up (new bearings, rings, block decked, head shaved, pistons cut). No leaks under the truck. Where is the oil going? Almost a gallon per 300 miles. Other days it...