Hi i'm Nick from Illinois - I just bought a 76 XS500 seems in good shape but not running.I only paid 150.00 with a good title. I've read alot about this bike and see it had several problems oil leaks and such hard to get parts but I've always wanted to ride so here i go...this is my first bike so i do have a few questions...1st what kind of Oil should i put in it? synthetic? weight? and how about a filter? oil and air filters - where do i find them? and a new tank the one on it is FULL of rust..I empted and rinsed it but it is still FULL.I don't really like the Square style can i just buy a new one / where? or is it possible to get this one working again? ok and is there a FREE manual online somewhere that i can use to answer other questions i have or do i have to pay for one? that's it guys thanks for ANY info like i said this is my first bike.