Try different oil filters!!!!!! Not the oil just yet. PureOne by Purolator is one of the best. But there is others too.
I had 2 motorcraft FL-820S do the same thing as yours. But not one purolator has so far. I`m on my 4th PureOne now.
Lariat#1

 

Since everyone just cannot help but spend 3 times the price they need to on oil, I guess I need to join the club. Where is the proof on Syn oil. I would like to read it. And not the manuf. claims either.

Sorry for the wasted space JerPamB, I did not have the prob. so disreguard my reply.

 

thanks for the replys. i will switch to a different brand of filter and see what happens. I was hoping that a motorcraft filter was high quality but maybe i was wrong. or maybe i need a wet sump system like some drag cars have that pump oil through the engine before you start it.