Oh ya, you might try "Jiffy Lube"......I'm sure they'll filter. LOL !!!

My cousin works at a local Ford dealership here in Texas He has told me several times that Ford will void the warranty on the F250 - 350's if you have installed a Fram filter in place of a Motorcraft. I do not know if that is right but I have also heard the same thing from the guy that has sold me the last two F250's. I am told there is a major problem with the fit and the filtration of the Fram in that application. The Motorcraft filter cost less than the Fram at the dealership and has a better filtration particle rate.

I do not know about the warranty myself but just passing along what I have heard. Both people whom I trust very much.

Ken,
Thanks for the heads up on the oil filter study, interesting reading.
auto10x
Bill

Here it is --

http://people.msoe.edu/~yoderw/oilfi...lterstudy.html

Here it is

http://people.msoe.edu/~yoderw/oilfi...lterstudy.html

Al,

I've been using the Fram PH8A filter for years with no problems, (it was the recommended filter for the remote unit that I have).

Considering going to an equivalent Motorcraft filter at the next change, based on all the comments in this thread and others.

Was pondering your oil pressure situation since I saw you on Sunday... still can't understand how the pressure goes up as the oil heats up. Mine always starts off at 65lbs or so and drops to 55lbs (off idle) as the engine heats up.

- Dan

Dan,

Looks like the weather will be suitable for a cruise on Saturday so I'll fire it up again to see what happens...

I see you ignored me this a.m. when I drove by and honked the horn... You're not as easy as I thought!!!!!!

later

I'm easy, but I'm not cheap!

Hey, liked the look of the cap you put on the truck.

Between not recognizing the 'new-look' and being stunned that a retiree would be up that early; just caught me off guard.

If the weather looks good on Saturday, count me in for a cruise. I have class until about noon; maybe go out to Art Totens.

The Stryffeler

I had a FramHP1 fail on the track at LimeRock,I' ll always keep a Motorcraft on hand just in case I need one and don't have time to order one

Hey Dan:

It is possible for the oil pressure to increase as the oil heats up. It is also possible to get higher pressure by switching from 20W-50 to 5W-30! Here is the explanation.

Most oil pumps have pressure relief valves, which do not allow the oil pressure to exceed a preset pressure. For the sake of this example let’s say it’s 60 PSI. The 60 PSI is at the pump. Most engines have their pressure sensor located downstream from the pump at the engine filter housing. Oil flowing from the pump has to go through a remote filter, an oil cooler and lots of plumbing before it gets to the pressure sensor. The pressure is reduced by the filter, the cooler and by every inch of pipe along the way. The heavier the oil the greater the loss of pressure. The 60 PSI pressure at the pump may become 35 at the sensor.

Three things affect the amount of pressure loss: the length of the plumbing, the size of the pipes (or tubing and cooler and filter) and the viscosity of the fluid. Viscous fluids, narrow pipes and long distances of flow all lower the pressure. If you don’t believe me just go outside and hookup 10 lengths of garden hose. Turn the faucet on to full and watch how slowly the water comes out the sprinkler. Imagine if the hose was full of cold 20W-50 instead of that nice thin water, it would hardly flow at all. I won’t get into Reynolds number and laminar versus turbulent flow but believe me it matters (ask any Chemical Engineer you know).

Adding a high volume pump will not help. It will just send more oil through the relief valve. Going to a high pressure may increase the pressure a little but at the expense of gear life.

Remember, the pressure is normally measured just before the oil heads back into the engine, not at the pump The best way to get pressure (and volume) where you need it (at the bearings, the lifters, the cam etc.) is to allow the oil to more easily flow through all the obstructions. Use the largest tubing you can, use the least restrictive cooler you can, use the least amount of tubing you can, use the least restrictive filter (dual filters if possible) you can, and use the thinnest oil you can.

I learned all of this first hand when I replaced the 20W-50 Castrol my builder had installed with 5W-30 synthetic, the pressure went up 20 PSI. Warmer oil would probably produce the same result.

Bob