Here is a nugget for you all. I am going from Amsoil used Mobil 1 V-Twin in last bike was great, but everyone over looks this oil and it is made by Mobil. It is Mobile Delvac Super 1300. Here is a little info on it and it cost way less and performs better.
Extra High Performance Diesel Engine Oil
Mobil Delvac 1300 Super 15W-40 is an extra high performance diesel engine oil that helps extend engine life and drain intervals in the most severe on and off-highway applications. The advanced chemistry of this product delivers exceptional performance in both modern high-output, low-emission engines including those with Exhaust Gas Recirculation (EGR) as well as older engines operating on low or higher sulfur fuel. As a result, this product meets or exceeds the new API CI-4 service category and JASO industry specifications.
Mobil Delvac 1300 Super 15W-40 is recommended for use in a wide range of heavy-duty applications and operating environments found in the trucking, mining, construction, quarrying, and agricultural industries. This product also meets the latest API specifications for gasoline engines and mixed fleets.
The outstanding performance reserve of Mobil Delvac 1300 Super 15W-40 is the result of extensive cooperative development work with major OEMs and advanced additive chemistry with patented Trimer technology. These enhancements assure excellent control of oil thickening due to soot buildup and exposure to higher temperatures and provide outstanding resistance to oxidation, corrosion, wear, and high temperature deposits. Due to its unique formulation, it also meets the more demanding SAE 10W cold temperature pumping requirements.