Ok my 03 Overland seems to be burning oil. Quite seemingly a ton actually. Something like 3 Qts in 1200 miles or so. No visible leaks, nothing under it when parked, no drips at all. I checked the radiator and the fluid seems to be the correct color no milkyness to it at all. I just don't know where it could be going since that seems like a ton to be burning. Any ideas on what it could be?
The pistons have metal "rings" around them to prevent oil from coming into the combustion chamber. But, these piston rings and get stuck directly to the piston from carbon or sludge build up. They can be broken lose with additives and things like that. Replacing them requires an engine rebuild, which is expensive.
/ 2002 WJ 4.7 H.O. / Flowmaster 50 SUV / Magnaflow Cats / Rocking that 2WD! /
another thing that can cause high oil consumption is blocked breather pipes, it causes the pressure in the
crank case to get too high and pushes the oil up past the rings. start the engine with the oil filler cap off
and see how much fumes come out.
For what it's worth, I was burning about a qt of oil every 800-1,000 miles. After a few rounds with the dealership as well as a a new PCV Valve, an "oil consumption test", Chrysler authorized under my life time warranty, a compression test and then they recommended replacing the heads. I just got it back today, so I do not know if it has corrected the problem.