Ja vozim cele godine pa menjam ulje po kilometrazi. Nisam neki ljubitelj MASS-a takodje, ali sam natrcao na njihovom sajtu na ono objasnjenje koje je slicno kao i na nekim nekomercijalnim sajtovima i forumima. Sta znam, neka covek procita i sam odluci :
http://www.jbmotorcycle.com/motorcycle-winter-storage-tips
"I know many people prefer to change the oil in their motorcycle first thing in the spring, and I used to be one of those guys. However, there’s a good reason to do it in the fall before putting your bike away for storage – SLUDGE. Changes are there’s at least a little bit of sludge in with your oil and you don’t really want that to sit in your bike for a few months at a time where it can do damage. Changing your oil and filter before storage will get some good fresh lubrication in there, and besides, when spring time comes you’ll be ready to ride that much sooner!"
http://www.600rr.net/vb/showthread.php?t=88440
http://katriders.com/vb/showthread.php?t=113437