Ok so I serviced the truck tonight. I use 15-40 rotella. I changed both fuel filters tuesday night. Now it acts like it is seaching for power unless you really hang your leg in it. I also noticed it pushed some coolant out the coolant reservoir cap. Do I have serious issues or what do I do? In an earlier post it had been surging took it to ford and they only found was cylinder #3 was 10% lower on compression than the others. So Im at a loss on what to do. I have been driving the truck for 3 weeks and the surging thing going on for a week and now this.... I was in the process of buying the truck from my father in law but I dont want to give him a decision on wether Im taking the truck or he is going to sell it. So Im on a budget and dont quite know if Im looking at big repairs early or just little things. So any help would be great. Thanks