I have read many posts, opinions, and facts on this any a few other boards concerning the use/development of the 5/20 oils and the various 'thick thin' viscosity arguments. The reason that I found this board in the first place, was dealing with the oil requirements of an 02 Honda and Ford truck. Well..... the Honda, Ford and other engineers may have done their tests ( to the beancounters approval I'm sure), but I guess we are the real testers! Anyone out there have ,or directly know of, any vehicle that has busted 100k miles ( hopefully 150-200k?) using 5/20 or 0/20 oil only. Or, who is the current mileage champ? And/or what kind of shape the motor is in and any oil related repairs. Some of the service trucks and salesmen should have done this by now.