c-13 problem

Message Title: Message Text:  http  https  ftp  mail    hr     highlight   LI   Quote  Select Emotion SmileWinkSadEmbarrasmentDisgustedBig GrinMadShockedTongueCoolFrownConfused [q]I have a 2007 cat c 13 Acert Kcb engine Has 470 hp 1750 torque 10 speed od tranny 358 rears runs smooth and has no knocks in the motor, no blow by I pull medium hills in Pa with a small dump bucket 80k 75% of the time My question is why am I only pulling 4.78 Mpg no matter what I do Tried to baby it or push it hard and still the same I need to get alot better fuel mpg than that to make this truck work for me Changed fuel filter, air filter, oil, and still the same I need to know if i should dig into the motor or if this is something that is computer related The truck also seems like it is running hot with the oil temp being around 235 240degree when im pulling a load with the coolant being around 200 to 210degree I need help in the worst way to figure this problem out otherwise i will be forced to sell the truck Any Suggestions[/q]

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