This is the only oil, that Stahl racing uses, in their 800 improved stock and 1000 prostock NSSR sleds. They, Tia VanGuilder, has the 800 improved world record.
http://www.racenssr.com/records.htm
Stahl racing had the 1000 prostock world record for a while. Then Mike Cleary beat the record in February.
I trail ride, with this team, when they are not racing. We have logged thousands of miles and had may discussions about the Legend oil. They run Legend in all of their 2 stroke applications. I began using it this year as well. The Legend has a very good cold pour, very low ash, and smells better than the Mystic JT4 that I had been using.
I do not know a lot of specifics about the Legend oil. But if these world record holders/contenders use it, that's good enough for me. Stahl racing is not sponsored by Legend. They pay the same that we do. They are confident that it provides the best protection for all of their machines.