didnt say i hadnt used the fuel filters...i wont use the oil filters have a plastic TUBE running the length INSIDE the filter...
they are missing the felt "ring" or seal on the bottom and they are a
DIFFERENT height (shorter) than the OE filters.
orginally ALL filters were the same...once the mfg's got things figure
out they cut corners where they could i suspect.
bush
there were instances of the aftermarket filters being to short which lead teh bypass/drain valve to not seat correctly. this lead to oil under pressure for the engine, but alot of unfiltered oil running around as well. this was attributed to many failed injectors.
the funny thing is there is n way to know you got filtered pressurized oil or unfiltered pressurized oil.
it was discovered by accident when the oil bypass sytems became avail for the 6.0, the ones that replace the factory cap with a new one with an oil sample port soon discovered the flaw and WHOLLY cow
it was also found out that even a correct oem filter could be inserted in such a way to cock the drain valve partially open. so you could be running around UNFILTERED.
and never ever know it, some engines failed and ford tried to baulk about oil changes and the drivers had receipts where a ford dealer was changing the oil and filters on schedule. you would think the engineers would have seen it -popcorn