Hello everyone! I am new to the board, having just registered today. I have been reading this board little by little over the past few days, and the info this board contains is PRICELESS. Anyhow, I own two cars. A 1992 Mitsubishi 3000GT VR4 (mildly modified), and a 1992 Chevrolet Cavalier. My 3000GT currently has about 147,000 miles, and is burning oil. The valve seals are worn, and the seals in the turbos are worn as well. A recent compression test showed all 6 cylinders @ 150psi. The compression ratio is 8:1. The car has lived it's life off of Castrol and Valvoline dino oil. 10w30 in the winter, and 10w40 in the summer, with sometimes a mixture of 10w40 and 20w50. The owner's manuel recommends 10w30 in normal weather, and 5w30 in the winter. I believe this may be to thin, due to the extreme heat generated by the turbos. I just recently switched to Valvoline Maxlife 10w40. I am planning on rebuilding the entire car within a year or two, once the funds are available. My question is, can anyone recommend a very good high mileage/high quality formula dino oil for this car? Those of you who are not familiar with this type of car, it is a twin turbo (small turbos) with a very cramped engine compartment (retains heat). From what I have read so far on this board, Valvoline is not that great of an oil. Any advice/questions/comments are more then welcome. Thanks!