Originally Posted By: ZeeOSix
There is nothing wrong with the number and size of the holes in the base plate and center tube. There is nothing wrong with the bypass valve, as I tried to explain in the other thread.
http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=3097538#Post3097538
The Purolators flow way more than your engine can possible put through it ...
+1000 Been using Purolator filters with the flat spring design for years with no issues. And the now too oft repeated questions/claims of oil filter flow are no more than fodder for idle chatter on internet boards.
The very first pics I posted here were of two Purolator made filters using that design. The now discontinued AAP Total Grip used for 5k and a PL14610 run for 7k.
http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=1940720 Both solid filters as shown in the pic below. Difference here is these filter have been in actual use for true oci's thus proving their construction quality and design.
And as is common knowledge for most reading this board, nitrile adbv's are used in the more value oriented filter filters, generally good for 5-6k, longer if no start up noise. And silicone is used in the higher end filters and generally for longer ocis.
As for the base plate holes (number, shape, yada yada) and flat spring design, having successfully used them for many years, I'm confident the engineers at Purolator know more about a now proven filter design than some novice cutting open filters and implying some bogus/imaginary flaw.
As I like to say about the Classic, if you can find a better filter for $3.27, buy it.