I'll be getting a new Honda Ruckus hopefully in the next couple of weeks, waiting on shipping. Oil spec is Jaso T 903 MA 10w30 SG or higher. I've got quite a bit of valvoline regular blue bottle non syn 10w40 motorcycle oil, MA2 SL rated. Is this safe to use in this? Ive noticed there isn't a lot of 10w30 in the stores, mostly 10w40. The manual says to dump the factory fill at 600 miles or 1 month and 2,500/6 month intervals after that. It says to clean the oil screen at 7,500 mile intervals. Ive heard these honda 49cc engines aren't picky about oil and can last a long time. Anyone have experience with these? Thank you.