Originally Posted by AviatorTroy
I for one run 20-50 in the summer and in the colder months I run 15-40 HDEO like a rotella, Delo, delvac, etc.
I ran 20w-50 for 65,000 miles while living in the desert...at 70k, and living in Washington, I switched to 15w-40 Marine and Diesel. Both from Amsoil, installed originally at 600 miles. Bike was broken as if it were stolen. ZERO oil consumption problems..10,000 mile oil interchange intervals.