[Fredmello]

I HAVE A 99 350 THAT HAS BEEN A HUGE AMOUNT OF OIL WITH NO OBVIOUS SIGNS OF WHERE IT IS GOING. IT HAS A HIGH REAR END RATIO AND STICK SHIFT, SO THERE HAS NEVER BEEN A GREAT AMOUNT OF POWER, THERE IS NOT ANY SMOKE OR EVIDENCE OIL IN THE EXHAUST PIPE. WHERE IN THE HECK IS THE OIL GOING???

 

[RT]

Check your fuel filter for signs of oil contamination. If you have torn / leaking lower injector o-rings, the high pressure oil will push into the fuel rails (all the way into the fuel filter housing), where the oil is burned. There are a lot of us that burn waste motor oil at concentrations over 50% with little to no smoke, so you can't use tailpipe smoke as a reliable indicator of burning oil.