Hello, Dave. I appreciate your concern. You will appreciate my situation because I know you have been through it already with your E9. My RW is becoming the proverbial "can of worms". Put the truck in the shop Tuesday 1/24 to diagnose excess smoke and oil consumption. I knew of oil seeping around the head gaskets but I was hoping I had more time. There was trace amounts of coolant in the oil, so I did not want to let that go too much longer. Also, exhaust valves were sitting deep and some guides were bad, burning oil. So we are doing the head gaskets, refreshing the cyl heads, and top end of the injector pump & governor. Pistons & liners look OK and oil pressure was good so we are leaving go the bottom end. TransEdge Mack in Allentown is doing the work in-house. These engines are costly but even more so if things are let go too long. I don't want to take any chances. Not complaining, though. I knew what I was getting involved with and don't regret the purchase of this truck. Gregg