Keaton85

Most likly the expansion tank. Water pumps are rare to leak BUT it's just one bolt away from looking!!

Then you can do an auto-rx treatment. Don't mess with seafoam. I've done this a few times and it's te only process that I have found that works.

Another one is to drain K1 through the system repeatedly. But that's up to you!!

Leave the filter alone. It's not the issue. Your issue is large particles that are building up on the pick-up screen. The reason it's not doing it while idling or revving is you are not sloshing the oil around like when you drive.

Thats just the best guess as I don't know the vehicles history is there is a lt of build up that has been dislodged from something.

You have to repeat the filtering process a lot! Over and over with the same oil untill almost no particles come out. Last time it took me 10-15 times.

Haha do you think everyone drives accross country to get an ARD tune?

I just use an old white shirt. By warming the oil up for a while and running it you will stir up the particles. You have to drain the oil out right after or they all settle to the bottom of the pan. If you get a l

You can tell how bad it is depending on how many particles you get when drained.

Nothing your mechanic can do about any of this.