Originally Posted By: Nyogtha
Looks like it did its job. Thanks for the C&P.
The flexibility you show on that ADBV after 8K miles puts Motorking's statement in question that the nitrile ADBV's used in the QS filters will turn into a rock by 6K miles
Originally Posted By: Motorking
wouldnt run them that long unless they have a silicone adv. Nitrile valves turn into a rock around 6k miles
back in this thread on QS oil filters.
http://www.bobistheoilguy.com/forums/ubbthreads.php/topics/3292216/Quaker_State_filters
Surely there are different grades of NBR used by different manufacturers and models / lines. I took a Purolator 'made-for' jobber line Tec Select brand oil filter off a friend's 2002 F150 a few months ago that had lost all ADBV function in < 6k miles.
Not sure about the rock hard ADBV on this one, but the QS3600s I've used on my brother's old '87 Tercal 3E 1.5 lose all ADBV action by 3-4K, easy-nice rattle on a cold start, oil drains out before you can get the filter fully unscrewed off the block. Never had one tear, though, even with 10W40 in the winter. Car51's looks good, though, shows even a metal crimp one has the ability to go 8K.