This is my report for Specialty Formulations 20w-50 I ran in my FLSTS 2003 TC88B Info on bike: Oil was run for 2803 miles. (8900 miles on engine) I had it on the dyno to dial in a new carb. I made 5 runs with it on the Dyno drags. Rest were around town and over the road miles. Bike has Hi Comp pistons 10:5:1 1450 cc Larger cams and performance ignition and high flow intake, 42mm carb, 2 into 1 thunderheader exhaust system. I ride it pretty hard. About 700 miles the bike was run in over 100 deg heat running down the highway 70 to 80 mph. I am real happy with Specialty Formulations oil in the trans and the engine. member #59 MolaKule makes great oils. Heres my best Dyno run to date for those interested.