I just took a quick look at the oil in our XR70 and it is due for a change. Will using the 10W-30 I have sitting in the garage hurt anything or should I be using motorcycle oil? I use automotive oil in my quad because it has a CVT trans which doesn't need oil (belt drive). However I'm unsure about the bike since it's an auto clutch. I searched on this topic but couldn't find it. I don't need a debate; a simple yes or no will work.