friday of last week i drove home from Elizabeth city nc to hickory nc. the truck ran beautiful with no problems. ran it out of fuel the next day. reprimed everything no problem. checked all my fluid including oil sunday before leaving for columbia tn on monday. the truck ran flawlessly again. had my 5th wheel on, drove over the bluridge mountains no problems what so ever. stopped to buy fuel and noticed some oily residue on the landing gear and front of the rv. looked under the truck a i could see fluid on every thing, not dripping anywher but wet pretty much all over. opened the hood and all the resevoirs were full so i pulled the dipstick and i was growing oil. it appears to have come out of crank case breather. i did have some fuel along the intake where 2 of the injectors were weeping. think i have that stopped. i would not think that could get in the engine though. not sure where to start looking but im thinking yall can help with that.i weighed my rig while i was buying fuel and it weighed in at 22,700. its the same trailer i have been pulling for 6 years now with nothing like this happening. like i said above every thing was running normal by the gauges. i pulled like a beast. 3 to 4% grade in 6th at half throttle and would accelarate. 6 to 7% grades in 5th pretty much wide open once it got over 6%.