I have an 02 3500 dually. I see oil leaking from behind the starter, one bolt is missing from the engine mount to the block, is this where the oil is coming from ??. Recently did a 380 mile trip, not towing, used 34 gallons of diesel......is this normal or what should I check ?? Anyone know what the running temp should be for the 5 speed trans ?? my dauge varies between 125 and 195 depending on speed.