Thank goodness for extended warranties. The manifold was cracked and a couple of bolts were broken resulting in an exhaust leak that gave me the sound of tabbit noise. A $1000 repair at no cost to me thanks to the warranty. The warranty has more than paid for itself with this being the third repair covered by it. Went to Ocean City and put 1000 miles on it and it runs fine now. I think with the weight of the Jayco 31' Jay Flight G2, RKS (7000 empty) my next truck will be a diesel.