I've been running Honda HP4M w/ moly (as per owners manual instructions) since I broke-in my 2002 CRF. I even have an interview with Mr. Yamasaki and Mr. Shimura (Honda engineers) and I quote... "Why are engine and gearbox oil seperate? Gearbox oil has very different demands from engine oil. The meshing of gears and the contamination of a wet clutch require an oil without complex, easily damaged molecules. Also, substances like moly are excellent lubricants for a cam, piston, and cylinder, butcan cause a clutch to slip. By separating the two chambers of the engine, the CRF can get more life out of it's oil." My 2005 manual now suggests using HP4 without moly and warns not to use "energy conserving" oils. I'm talking about the engine side not the tranny. What gives? Why did Honda switch positions? I would really like start running moly in my 2005, because I had great reliability with my 2002. What do you guys think?