To put it the way Shell told us when we talked to them, In Europe they wouldnt even use our fuel in their tractors.
This fuel is a very high grade diesel, that will prolong the life of your diesel.
If you get a little bit more confidence running it then go for it, use it for racing. How much fuel do you actually use for racing?
If you drive to the track make sure you are pretty much on empty when you get to the track and only put in as much race diesel as you need to race then fill up with regular diesel on the way home.
Its no different than running race gas in your gas vehicle. If it gains you a little bit of power great, but if it adds to the protection of your motor by making it a cleaner burning engine and more efficient then it gets my vote for sure.