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

Answer 1

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.

Answer 2

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.

Answer 3

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&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)

Answer 4

unusual you had a difficulty with a Fram, they are super filters, the concern would have been dew to loss of a "drain back valve" it may be well worth sorting out is the clear out variety replaced later on for the V6 that has a drain back valve. What happens is that some fliters are placed in a poz which will reason the oil to drian out of the fliter back into the pan once you close up the engine off. once you initiate up the engine back up the oil pump has to pump the oil back into the clear out and then to the engine and you unfastened some seconds of compelled oiling for the time of start up up and you could pay attention a "knock". in case you have a clear out with a anti drain back valve it won't enable the oil to empty out of the clear out once you close up the engine off, so whilst the engine restarts the oil is waiting top out of the clear out. The FRAM clear out is an excellent clear out, I in basic terms use ok&N oil and Fram filters in my GTO and that they've the valves. Use 5W30 interior the wintry climate.

Answer 5

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.

Answer 6

K&N oil filter, Bosch, and Mobil 1

Answer 7

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.

Answer 8

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=1463115&page=StoreFront/eao

Answer 9

I ALWAYS RECOMMEND THAT YOU USE THE OEM FILTER BECAUSE YOU CANT GO WRONG.