I currently use 10-40 for the summer heat which gets to be above 90 sometimes 100. but in the winter i will use 5-30. i see that some of you where saying that you use mobil 0-40. i have seen this oil in the store and wondered about it. i didnt understand if it would be ok to run in my Ti if it was 0-40. i mean doesnt it need some weight?. or would this be better oil to run in my Ti? __________________ custom dual exhaust,M3 front and rear bumper, 10.4 inch roof mount drop screen, Viper alarm system, DSII's rims, M3 Vader Seats, M3 Mirrors, Carbon Fiber CAI, Smoked Corners, Side Markers, Leatherz armrests, black grilles 225k miles and still the Ti goes on |