Under the transmission thread I posted a BAD DAY. Background if you want to read. On the way to work yesterday I started producing large clouds of BLUE smoke. I shut everything down and had the truck towed home last night. When I had a chance to examine it, I found oil leaking from the passenger side exhaust pipe. I have no cross over in the pipes. I started the engine and again came the cloud. But the engine ran smooth and quiet. No missing or flat popping. I took the plugs out on that bank this morning and all of them are light gray colored. I am thinking that I have a bad exhaust valve guide on that head. Two questions. 1. How could oil by pass the combustion chamber and get out the exhaust? 2. If this head is bad, I will have to replace both heads. Opinion of World over Canfield?