This is the second time I used a K&N filter with the overnight start up bearing noise,like the drain back valves are not working.The first time it happened,I chalked it up to a defective filter.then I tried one again and the same thing happened,this one was even an oversize filter!! So I changed it out for a good ole white purolator,problem solved.No more of those [censored] K&N`s for me!!
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