I have the same problem I've read that others are having where the oil light comes on or flickers when the car is warm.I had the sending unit replaced at the dealerfor the same problem and the problem was gone for 3 years. Is the unit a known weak link and where is it located. I want to do it myself this time. Also, I read where someone recommended using 1qt of ATF fluid and 4qts of motor oil every 3rd oil change to help with the sludge problem in the 2.7ltr. Has anyone tried this succesfully?