Thanks for the information.Ive been running a 1st gen bronco 3 core cross flow,and thin direct drive flex.worked OK but not great.This time I went with a champion 4 core and 18” electric.No shroud,we’ll see. I do still have room for the thin flex if needed.
Back in the day when your dad was using Fram filters they were a premium filter.After buy outs,take overs,and just plain greed, now junk trying to capitalize on name.
When I was shopping there were some copper ones out there but no real options on thickness.Or go with another set of Fel Pros, with studs and maybe get another few years out of it.
The cometics are available in a variety of thicknesses.Now would be a good time to freshen the heads MLS gaskets as stated above need proper surface finish,If you do the math you could lower your static a bit.And I know there pricey but get the studs.
Maybe head gasket.Do a leak down on and listen where the air goes.Or borrow a smoke machine leave the plugs out and follow the smoke.#8 maybe a big blob of I burned oil(carbon) taking up space