I had the engine replaced after burning a piston due to a bad injector. The new engine has about 12,000 miles. The original engine never burned a drop of oil until it burned the piston.

After getting the new engine I had to untangle some wiring on the engine and noticed a very small crack in the turbo. I posted a pick and everyone who replied said it was nothing to worry about.

I have had to add as much as two quarts in a thousand miles. Can't put a driving pattern with the oil consumption until recently. You never know you may check the oil one time after sitting overnight and it is full and another time it is low. Do a mixture of driving from empty to towing 15,000 lbs and a lot of short trips lately. Last weekend I let the engine idle for several hours. I had done this a lot with the original engine traveling long distance racing with no issues at all. When I started the engine and went to go home the truck smoke really hard and after I ran the engine for a few minutes it cleared up. Seems like there was probably a lot of oil built up somewhere, maybe the intake system between the turbo and the manifold. Like I said before the intake system is clean when inspected, I checked at the elbo next to the intake manifold.

I asked in another post and all I got was the don't idle your truck posts.

I wonder if while idling and making no boost is it more likely for something in the turbo like the oil seal to leak? This may explain why the oil consumption is unpredictable. You would expect to burn oil when heavy hauling. I don't know that to be true. It may be burning more oil in town driving under no load. I am keeping a watch on this and checking the oil daily to try and put a pattern of driving with the oil consumption. So far I have been about 1,200 miles and the oil is halfway up the safe zone part of the stick. I think most of that was burned when I saw all the blue smoke after idling for a long time.

 

I'd also say it isn't good to let it idle that long...

As far as the turbo, I wouldn't think idling would effect it. If you think it might be leaking oil into the intake, just take the tube from the turbo to intercooler off and have a look.

 

where is the crack. take the hoses off the turbo and inspect the inlets and outlets for any oil residue and that will give you an idea on whats happening. no oil anywhere then the motor is the culprit if there is oil residue anywhere in the turbo then i would suspect the turbo. once b.s. on the idling causing it all my trucks idle and no problems

 

The crack is located just below the bolt up flange to the exhaust manifold. I am told they can do this if overheated. Most I have been told about were a lot worse. May have happened when the original engine burned the piston. The crack has not gotten any bigger and only a trained eye can identify the crack. It looks like a dark spot until you clean it off with brake clean. Then you notice a small crack. It is not wide enough to feel with a knife blade. Just something to watch and see if it gets worse. That is unless there is a seal problem. I have not taken the hose off at the turbo but have taken the air horn loose next to the intake. NO OIL at the time.

 

then check the exhuast if its going thru the turbo it will be their. i understand the need for the truck i run mine daily too. it mite be a seal in the turbo not sure but the crack doesnt sound like its in a place where it could cause a problem

 

2nd the internal turbo seal......I don't think idle time or the little crack is your problem.

 

Check your return line on the turbo

I had an 01 that I sold to my buddy

He had a similar problem with burning oil and finally noticed an oily exhaust tailpipe. The seal went out on the turbo and was leaking oil into the exhaust. It might have been leaking into the the intercooler too, I can't remember.

Anyways, ended up finiding out the oil return line was kinked near were it went into the block.

Smoked a second turbo before he figured it out.

 

Thanks Glen and Dragonslayer.

I will look into it. If you look at some of the mess made when the engine was installed it would not surprise me if the pipe got kinked.

I have seen no oil in the pipe but the converter probably burns it off. Guess I would have to pull the downpipe.

Maybe it is time to have the dealer take a look. I just don't care for all the concerns I get because I have a pyro in the manifold. If they towed like I have they would want a pyro as standard equipment. The boost gauge is just fun to watch.

Leon