Engine/Transmission (1998.5 - 2002) Using oil

[Boost]

My truck has started using 1 qt of oil every 1000 miles. It started at about 11k and now has 14k. No visable leakage. Any ideas??



Rob

 

[Wheaties]

Boost,



I and a few others have seen leaks that weren't neccessarily easy to detect. My leak occured where the power steering pump shaft went through to the timing gears. Others have had leaks around the oil pan seal and if I recall, the valve cover at the rear. Both the last two are hard to detect. I hope it's one of them.



Matt

 

[Pit Bull]

Rob, have the Dealer put some die in the oil and black light it after a couple of hundred miles. If it is leaking that will show it. I would wash the engine first. I thought my 2000 was using oil but it only happened with one oil change cycle Then never again. Good luck and keep us posted on what you find. Take the Comp off before you go to the Dealer for the leak check I'm sure you knew that

 

[Vaughn MacKenzie]

if there are no visible leaks it could be the turbo eating up the oil, possibly a bearing on the way out with excessive clearance??



Vaughn

 

[Boost]

Thanks for the replies. This happened on one oil change cycle. I just changed it and will keep track of exactly what it uses. I sent a sample to Blackstone to see if anything unusual is in the oil. I will post when I know more.



Rob

 

[John Berger]

If the turbo is the culprit, you might see oil at the tailpipe. Does the turbo give any signs when a bearing is going or does it just up and buy the farm at the most inconvenient time?

 

[roadranger]

Originally posted by John Berger

Does the turbo give any signs when a bearing is going or does it just up and buy the farm at the most inconvenient time?

I've lunched a turbo in a Mack 300 hp. , and a Cat 3406B 425hp.

Neither time did it give any warning beforehand, just left me stuck on the side of the road with no power and blowing black smoke worse than a locomotive.



Be careful trying to limp off an Interstate with a lunched turbo, the engine will start burning the lube oil pouring thru the turbo, and will run away with itself!



It also fills up the intercooler with oil, so when you get a side of the road turbo changeout (fleet mechanic), it wants to run away with itself again! Oo.