I live in a mild to hot climate. My lube is Motul 7100, Syn 20w50 in summer and 10w40 in winter. I use it in my yz race bike which revs to "infinity and beyond" and figure its good enough for the Terra. Changing it every 4000Klm orso. There are many good products, so I just pay for one....err in blood That's my take Coffee
