I like to cross examine my oil filters when removed..
The latest test subject is a Mann filter compared to the "cheaper" Bosch..
The Mann filter uses a rather prehistoric leaf relief spring
and the casing is a tad flimsier!
The Mann filter also had around 500mi on it!!
and pleats are a tad deformed..
The "old" Bosch filter had 504mi on it and here it is..
casing is more robust and it has more "oil flow" holes in the cap...
Bosch uses a tougher coil spring and the filter media is far more robust..
The pleats aren't nearly as deformed, and it feels "tougher" it is harder to separate the pleats..
I'll do more research!!
The Mann filter was £12 at ECP
And the better built "IMO" Bosch was £8!!
Gotta love it.
Weird nerdy shit!!