well i got a 99 with 215k. it always run good till i noticed its eating oil. changed the oil about 3000 miles ago and checked it by chance before i left on this 150 mile trip.it was down a couple of quarts. i changed it in july.nowi topped it off when i left went around 200 miles on the freeway and its down abot a quart. whats going on its never done this!! truck seems to run good but eating oil.always changed the oil between 3and 5000 miles. what do you think is going on?? drop me a email par12730@sbcglobal.net. no oil at the bottom. only a few drips out of the blow by tube.i thought these things were good till 400k or more??

 

Probably the turbo seals.

 

Need to start looking for leaks...

 

i agree with the possible leak, i had a leak in the vacuum pump for years.....i finally got off my butt and fixed it, now i only use maybe one quart every 15,000 miles i change oil between 15,000 and 20,000 miles......i now have 241,000 miles on it

 

dont really see any leaks, turbo seals will suck oil?? pretty much an original truck. it must be sucking thru the truck or blow by when driving cause there's only a few drops on the ground when it set all night.

 

Going through that much oil with no sign of leaks, I think I'd also be yanking the boost tube, and/or elbow to have a look.

 

what am i looking for ?? boost tube ? the one out the bottom?im out of town right now and almost afraid to drive home from the hotel.friend of mine told me his buddy turbo went bad and was sucking oil and the motor just ran away and he coudnt stop it and it put a rod thru the block.well keep me in ideas guys leaving for home friday afternoon. going out side now to look and see whats going on. HELP !!check back later for input. thanks

 

It could be spewing oil into the intake air stream, or out the exhaust...

If so, it would be leaving oil in the tube from turbo to intercooler, or in the exhaust side.

 

now what to look for?? topped off the truck with oil before i left for home 160 miles it didnt use adrop on the way home?? opened the tube at the bottom of the tube and no oil going into the inter cooler. so where did it all go on the way ou but the way back it didnt. lost on where to look for or where . hate to drive it.now what??

 

crankcase vent maybe plugged

 

hi
had a similar insodent about a year ago .
went 700 miles and checked oil and it was down app 1 gal ???
normaly i use 5w40 rotella syn but thought if it were going to blow it out from now on i got a gal of 15/40 reular rotella and pored it in .

i did however have oil all over under side of truck whitch is normaly dry? looked to come from blow by tube ???

drive 700 miles home and still slightly over full ??????

have towed and drove HARD sence that time and not lost oil at that rate agin ???

still dont know why or what happened that time ???

 

With my truck, anyway, it has to sit for quite a while before the dipstick reads true.

 

crankcase vent maybe plugged
you mean the blow by tube?? or should i look some where else?? my cousin thinks my turbo is going bad-- the seals but why wouldnt it do it all the time?? better call in DIESEL CSI ?? LOL

 

Any sign of oil contamination in the coolant?

 

It's weird, my truck did something similar as well years ago. Changed oil, headed to upstate Ny. Checked oil here at home, got into the welcome center in Ky and after coming back out from restroom saw puddle of oil under truck. Oil level way down, luckily keep a gallon in the truck. Topped her off and worried for the next 550 miles. When I got to Ny I let her sit, checked the oil level and dead on perfect. Drove 800 miles back home and never had a problem again. Can't explain it to this day....might have been the one time I used smelltella and she was throwing up!