An interesting article on the use of M1 15W-50 in a Harley. It is a part 3 of a series of articles on the use of synthetics in Harleys.
Thanks to Doyall for the link to the first two parts.
http://www.fullthrottlewest.com/article.htm
Thanks to Doyall for the link to the first two parts.
http://www.fullthrottlewest.com/article.htm