You are meant to swap the filter out every 4-6k miles and just top up the oil to the correct level rather than swap it out every 7.5k
There is a big thread on j33p about it but its a bit bias
ignorant question here,is this some sort of engine "rejuvenator" or "protector"???
It's in my Wrangler - yes you only need to change the filter and to be honest found it to improve things for me.Why are you so against it - do you have some real experience with it?
Please explain what happens to all of the metal filings in the oil which the filter doesn't take out - the ones which make oil glimmer slighly when your doing an oil change.
Please don't let this thead degenerate into an argument, as threads of this nature always do..