update. Took the advice on the forum and changed to full synthetic 5W40 and changed the fuel filters. No improvement on cold running. When I say cold running, I do not mean really cold, I mean it runs bad until the truck gets up to operating temp. It starts right up with no hesitation at all but misses really bad until it warms up. Usually takes a couple miles then its fine. Problem is, I live in KY and its all hills. My truck struggles to go up steep inclines when its running like this.


Any other ideas would be greatly appreciated

Thanks!