[ujm4ever]

102K on an NT650. Started out using Mobil1 15w50 later switched to Amsoil 10W40, which seems to hold up better (based on shifting feel) than the Mobil1. Oil changed once a year 5-8K miles. Bike still runs great, never been apart, no clutch slip. I would not hesitate putting it in an older motor as long as its had regular oil changes.