I don't understand why anyone would use a Fram.
With all the info and tests out there, they are the only ones said to stay away from.
There are plenty of filters 10 times better for the about the same price.
Some even cheaper.
Just because you don't notice a difference don't think there's not one.
that's foolish stubborness, what's it take, for your engine to
have a problem before you want something better for it.
I've heard knocking engines stop knocking just because the Fram filter was taken off
and replaced with a better one.
The Fram restricts oil flow, period.
You're not going to notice the difference usually, but it's there.
Why would anyone risk it?
But then I've known people that's never changed their oil and said they've never had a problem.
So that must make it alright, maybe you should all do that too!
At least that'll save you some money, buying a Fram won't.
Go to the end and read "filters to avoid"
http://people.msoe.edu/~yoderw/oilfilterstudy/oilfilters.html