Originally Posted By: Corvette Owner
Don't use the premium DELCO UPF filters, they filter too good, at the expense of oil flow.
Man i keep reading you posting that!,i have 3 cases of these filters running them on a 5.7 vortec and 3 3400's and i have no flow problems at all just the opposite,in the coldest winter days with 10w30HM oil pressure is bang on no lag/ticking at all at.
happen to have any real flow charts showing this filter?,i can't believe you have problems. they were designed to flow very well and filter very well..great filter top of the line!!
just like the P1 flow [censored] bull!!