I rode with a guy who runs series 2000,has for years, and broke is driveshaft one year. after replacing the shaft he forgot to refill his chaincase before his next trip, which I was on! after 1100 miles on a bagger trip he realized there was no chain case oil in there and the Amsoil did its job and protected his chaincase! no shavings, no heat nothing was wrong, it was amazing that nothing happened! That Amsoil is good stuff!