I have heard that people run regular car motor oil in their bikes..I can't believe that..Car oil is ok, but its made for car engines that redline at about 6000 RPM's, most bikes don't redline till about 12000 or better..The car oil can't stand that kind of RPM's or Temp's..Am I correct in this assumption? Also What benifit would I get from running a synthetic oil and not a regular motorcycle oil?