Thanks klitch, my bad.

 

Thanks Klitch, my bad. It's a done deal.

http://minimopar.knizefamily.net/oilfilterstudy.html

 

I won't ever run fram.. but before I did research and found the problems with fram, that is all I used. I have 280,000 miles on my ranger and fram is all that was ever used... take it for what it is worth. I still won't use fram any more. especially since motorcraft filters are cheaper than fram at wally world.

 

Does anyone know if you should see an oil pressure difference when you change filters...from one brand to another?

 

I do suppose that this is possible, some filters flow more freely than others.

 

So would a free-er flowing filter cause a drop in oil pressure due to less resistance or higher oil pressure?

 

Good question - I'd have to do some research, I don't know off the top of my head. I'd guess a drop, because I believe when the bypass valve opens, your oil pressure will drop.

 

Nope. Pressure by definition is "resistance to flow" in simplest terms. Flow through the bearings and other ports is way more of a factor than through some filter. I would fenture to guess that actual flow (in terms of psi) between any filter on the market is going to be negligble at best. For the filter to actually have an influence on pressure, would mean there's a problem or restriction in the filter. Remember this...a lot of times it's just as bad or worse to see a pressure increase compared to a drop. You can have a pressure drop for many reasons but an increase usually means some type of clogging somewhere which is not good for internal components. A free-er flowing filter will not cause a pressure drop if it's not already the most restrictive part of the oil system..which it's not. No you could have a slight pressure drop 'at the filter' itself, but my comments are in regards to the system as a whole. A slight pressure drop at the filter would never register say at the pick up point for the pressure switch if pressure through that orofice remained constant. Either way, waaay too deep for this discussion. Install your remote filter, enjoy it, and sleep well at night

Someone mentioned filling up the lines with oil when ever you start the truck...as mentioned fill the filter first. I have mine mounted straight up and down which means I can literally fill it to the brim before I install it. Do you know how fast that oil moves through those lines?? Any effects from the split second it takes to fill them is once again going to be negligible. Cranking on an empty filter is far worse than that.