What is every one running for a filter

I generally run the Merc filters... How often does everyone change theirs?

I'm running 850 hp if that helps

perma cool 81000

600ish HP

The one's I like are:

Racor - PFF5510

Donaldson - P550677

Wix - 33225

Merc - you know this one

Napa - 18-7845 This one seems like it's the cheapest made out of my list. But they're readily available usually.

These are all spin-on that have the same footprint as the Merc/Sierras or however you spell that...

I run all wix filters. I think mine is a 33107. Not a seperator just filter. I had some clearance issues with the taller wix seperator.

I run the merc filter. Change it once a year. Never had any fuel issues.