What I have left out is the
oil testing I also did. I used Mobil 1 15W50, 10W30 and 10W40. I flushed the system each time between
oil changes. I disconnected the return line from the
oil cooler at the block and pumped two quarts through to ensure no cross contamination. At 100C and 3000 rpm the 10w30 was 53 pisg, the 10w40 was 58 psig and 15w50 was 63 psig. It appears each jump in viscosity was good for 5 psig, what was bad though was the 15w50 took forever to warm up where the rv in the oil pump was not popping and it was 85F outside. I could not imagine what would happen in the winter. Above 3000 rpm the oil pressure flat lines. It appears the "sweet spot" for mine if you are believer in 10 psig for every 1000 rpm is the 10W40. All were
synthetic so wide viscosity ranges are not a problem.
The funny thing with my filter testing is I was getting pressure 10 psig higher than my gauge. Tomorrow I am taking the two gauges I got to a shop which will check calibration. Absolute value did not matter much since I was not looking for actual values but relative pressure drop across the filters. If in fact they are accurate I am getting a 10 psig pressure drop from the remote filter housing to the engine. In otherwords through the hoses and oil cooler.
My wife refuses to allow me to cut open any more filters, have her hold any more gagues, or have me smell like gasoline all night, LOL. I gave up beer 7 weeks ago, lost 8lbs and only run 3 nights a week instead of 5, she says she was happier when I was drinking LOL. Once she recovers I would like to test a Royal Purple filter since they have the sythetic media. I also sent the an email request asking their flowrates, pressure drops etc. My guess is the pressure drop will be large.
If I had to do it again I would have splurged for the Mobil 1 0W40, best of both worlds, thin as 10W30 when cold but 40W when hot. I have to admit the valve train is quieter with the 40W after some pretty hard driving.
In my discussions with coworkers a guy told me about a filtermag, he brought it to work, holy sheet, I could barely pull it off the oil filter is stuck so strong. I dont see the advantage, but I also dont think it would hurt. I could see the advantage if the filter would bypass often but since the motorcraft doesnt it should catch any debris.
I did remove the oil pan the first time and it was as clean as a surgical instrument, so filters do a heck of a job or the engine is not experiencing any wear.