I agree with John about valve springs. My 250 Chevy is set up with 55 lbs. on the seats and will rev to 6000 rpms easy, just about the time the hydro lifters start giving up !!! As a retired Shell Employee with a direct line to R/D I will find out if there are any changes in Rotella in the works.... SCRAP


Jerry Davis II#4711



ol Smokey said "one test is worth a thousand expert opinions."