Well, I bought a blaster off my friend mid-last summer and love the thing. Well except for the rear brakes which never worked. It has been recently rebuilt(I'm assuming new rings) shortly before(as far as riding time) I bought it. I know nothing about blasters so I was checking google to find out what kind of crankcase(transmission?) oil to put in and found this site. I'm off to learn as much as I can now.......................