Hi, I have a 2000 international semi truck Dt466e. The truck has been acting strange the past few months, but I'm very concerned with heavy blow by and oil coming out of blow by tube after driving the truck for just a short distance. The truck only has 80k miles and is not running hot. It will sit and idle all day long with out this problem, but as soon as you drive it it starts to act up. Truck seems to be over fueling at times and losing power.