recommendations on oil change intervals. I know they're here, but my searches come up with about nothing. I know the book(s) suggest 6kmi. I'm there right now, and I'll be lucky to get another 1000-1500 miles for the season. Last year was good for me, and I managed about 7200 mi. So, do I shorten the interval to about 3500 mi, or change it seasonally and call it good? I'm running Valvoline dino, motorcycle specific 10w40 and change the filter with every oil change. Thanks.