What engine oil filter is the least restrictive in terms of oil flow?

It is always best to stay with the factory filter. But if you can't AcDelco would be my choice. It is as close to factory design as you can get. I have put on alot of Fram filters that wouldn't even build oil pressure, Stay away from Fram.What engine oil filter is the least restrictive in terms of oil flow?
K%26amp;N oil filter, Bosch, and Mobil 1What engine oil filter is the least restrictive in terms of oil flow?
It's hard to say without knowing the model and Eng. type. Generally ';Fram, AC/Delco, or a top grade such as those'; also the viscosity of the oil figures into it too.
Chances are, the less restrictive the filter, the less effective it will be at removing crud. Why would you be concerned about oil restriction? There's little to be gained by using a less restrictive filter and if anything, a lot to be lost. Most of the restriction (oil pressure) in your oiling system is going to be at the bearings and not the filter. That's why an engine with good bearings will have higher oil pressure than one with loose ones, the former has more restriction. By the way, even into the 1950's it was common for engines to have no oil filter at all. Non-detergent oils let dirt settle to the bottom of the oil pan, you changed oil every 2000 miles and engines would still run 100,000 miles.
What kind of car do you have and what kind of driving do you do? If its just a stock car used for non-racing driving *ANY* oil filter will be ok. As far as I know, NAPA gold/wix has the highest oil flow listed and is a good OEM substitute.
what ever you go stay away from frams and other fram make oil filters(i think advance auto branded filters are frams). they used to be a good filter but the stared using paper on the ends of the filter which let more of the crud pass right under the filter element if you have a few dollars to waste just buy a few different ones and cut them open. I know wix and the stp branded filters have a very nice seal between the ends of the fitler(all inside) and the internals just look much better made. I personally run the k%26amp;n filters they average about 9(not that big a deal seeing how much you are already saving doing the oil change yourself and its only once every 3000-5000 miles). that it have a nut welded to the top of it which makes it a sinch to replace in tight spots.





and to be honest I would worry more about the oil than the filter, I would recomend mobil drive clean 5000, it is the cleanest oil I ever poured into my car(until the stopped selling 20w-50) it looks a bit clearer than most oils it comes out yellow not light brown like most, but i would stick with the normal oilchange intervals though 3000 or so but for you rotary guys stick with the 1500(rotaries run really hot and break down the oil alot faster, my oil looks new when I take it out my rx7, and it goes into my lawn mowers and other things)
I would say one using synthetic nano-fiber filter media, rather than cellulose (paper). The smaller, more uniform fibers trap smaller particles and allow more flow over the life of the filter. Check these out by Amsoil: http://www.amsoil.com/redirect.cgi?zo=14鈥?/a>
I ALWAYS RECOMMEND THAT YOU USE THE OEM FILTER BECAUSE YOU CANT GO WRONG.