Since my gas filter thread is going all over Wonderland anyway-I welcome your experienced question about what is generally thought to be an inferior
oil filter (meaning there are better ones out there-not that they'll kill you). I have seen a million threads where a perceived superior product is loved by a thousand guys and hated by a thousand others.
You state 'all your vehicles' use the Fram so I'm assuming you mean the race cars too. All the good evidence you give is long mileage street cars-a less demanding area. I used the AC you had difficulty with (with no such problem as yours) until the Mobil 1 was born. Been using those for about 15 years and am now about to try the K&N.
The evidence I saw was the major test by Bob the
Oil Guy which revealed among other things the cardboard anti-drain valve which fails quickly and (I think) allows the filter to go to bypass full time. Other published tests I've read said that Wix, Hastings, Mobil 1 and K&N have superior construction and better elements. It's my understanding that the Frams used by the fuel teams in drag racing are completely different filters (HPG or HD?) than the street 'performance' type.
I worked for a major performance engine builder and the filtration of choice for break in and dyno testing was System One. If motors came back for warranty work the first question asked was which filter was used. They were largely Frams or worse yet no-name or offshore types.
Hopefully, ACK will give us the inside story on Fram pros and cons.
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