I've got two weeks vacation coming up...I've decided to replace the rear main, oil pan, and valve cover gaskets on my Jeep 4.0. The inside of this engine is DIRTY, having about 10 cheap dino oil changes in 100,000 miles. I will probably be running mobile 1 this summer when I start towing my boat. Given the fact that I'm going to replace all the seals, what is the best (easiest/cheapest) to clean this thing out? I know those 5 minute flush kind of products are usually a bad idea, but isn't that because of what they can do to old seals?
Edit: Please don't recommend auto rx, it's waaaay to expensive for the amount I need and I obviously don't need it to help my seals.
Edit: Please don't recommend auto rx, it's waaaay to expensive for the amount I need and I obviously don't need it to help my seals.