But were the pressures acceptable (according to the values listed in the FSM) once the oil was warmed up? I'm under the impression that they were not, correct? Another oil would be Mobil 1 Racing 0w-50 if you can get it. Would give you an oil that is thinner at startup than the Rotella, but still heavier at operating temperature.
Originally Posted By: Daigle
OVERKILL maybe im perceiving a problem thats not there... but with 15wX (40 rotella dino) my motor was SUPER loud at cold start and idle in general, (10w30 was noticably quieter) and the pressures were so high i had to chang my driving behavior durring warm up driving. i also thought 90% of engine wear happens at startup and a thinner cold rated oil will help reduce that. are these concerns somewhat neglegable? of course i want my motor to run well and last as long as possible. good to know MITCH! i was hoping it wasnt to big of a range for one oil.