Daryl, I often see the Mobil 1 MX4T etc at Autozone. They usually have a seperate area for it. Frankly, I would, as I said, use the Mobil 1 15W-50 performace auto oil. It has moly in it, a small amount but it will not cause the clutch to slip. The MX4T does not have moly. Some bike oils have moly as well including some Honda oils. Yeah, I would be careful on the filter, probably use the Triumph part until you can do some research. Yeah, I figure Triumph recommends Mobil 1 MX4T, that is a 10W-40 I think. It is an excellent product but I have not found it on sale or rebate as is often the case with the 15W-50 Mobil 1. J