Ford F250 6.2 Liter gas any good?

Mine tows our fiver without problem & more than enough power. Recently came back from a 12,500 km tour across the U.S from Ontario via Arizona , California up to Washington State into B.C & returned via Idaho , Colorado, Kansas ,Missouri + more ( yeah I know I missed listing a few states) and back up to Ontario. All in just under 3 weeks Absolutely flawless and no hills that I couldn't take at the speed limit unless I was being blocked by Semi's. Only thing done was change the oil. I was very impressed with the engine braking on the downslopes I hardly had to use the brakes on truck or rig at all in fact it slowed it down so much that sometimes I had to goose it going down!