So I finally got my 06 WR450F. All I can say is wow! My first ride was out to Cape Spear, Newfoundland for the prerequisite breakin. Lots of big hills and little traffic to properly load the rings. I have 37km on the bike now and I think it's ready for it's first oil change. What oil (brand, weight) would you guys recommend for the first change? I figure in this environment I can run either a 10w 30 or 40. Now I can't wait to hit a trail!