if you think im being dishonest about what i said,wait 'til someday you buy a used truck from the dealer,he tells you it just had a overhaul les than 100000 miles ago,and it blows up the first trip.that happened to me,1984 from a dealer in richfield ohio.before most dealer resell there used trucks they check them out,so if it did have a bad head or head gasket,they would fix it before selling it,and besides that,when you buy a used truck,you should have an oil sample done.If there is fuel in the oil it will show up,even if there isn't any miles on the motor.I the head gasket is bad,it will put water in the oil just from starting it.
Another thing,car or truck,when you trade your getting screwed any way,so how does this go,buyer beware