Yes, i did change the fuel filters and one fuel line that was leaking. I pumped the hell out of it just to make sure all the air was out. The metal can filter i filled with diesel clean powerservice and dumped the rest in the tank. The car started right up and ran fine. The fuel filters i had changed the day we bought the car because we would notice a little lag then a boost of power and that usually happens to the SD when the fuel filters are clogged. Sure enough they were filthy so that fixed the problem.
Yes i did use 5w40 mobil 1 truck/suv oil and i bought it at kragen. Had a coupon too brought it from $5.99 to $3.99 a quart
But i still dont know why its idles rough and starts off a little sluggish then slowly catches up speed. The plastic pre-filter looks spotless.