Do not trust this company. AVOID S & J ENGINES AT ALL COST. They are deceitful and fraudulent. Our head gasket was leaking oil at the right rear corner and was still under warranty. We sent the gasket back and finally after two months we received a photo and letter from this company which showed a DIFFERENT gasket than the one we sent to them. The gasket in their photo showed a broken ring. With this they denied our warranty. We called and left messages to the owner with no luck. The owner is too much of a wimp and lacks balls to answer our call or to return our call. We filed a complaint with the US Attorneys office and the BBB in Spokane which was no help. DO NOT LET THE 7 YEAR/100K MILE WARRANTY SUCK YOU IN. THEY WILL FIND A WAY TO WEASEL THEIR WAY OUT OF HONORING THE WARRANTY (they have no honor). THEY ARE CROOKS OF THE WORST KIND.