Ok, 2009 450 EXC first oil change, what are the amounts of oil that need to go in the crank and the separate gear case. I am reading a lot of conflicting info. The second question is that, I was told that the bike from the factory comes with full synthetic oil. I picked oil and filter from the dealer and was hit hard by the $22 dollars a litre they charged, is the Rottela T6 synthetic a reasonable replacement. I don't want to start another debate on oil, but just wondering if anyone else is running this in their bikes.