yeh they have a complete listing on their website.... http://www.sunocoinc.com/site/Consumer/RaceFuels/ they have one just like mr9, and it just my luck i can get it right out of the pump 24/7 at teh sunoco less than a mile from my house
The closest fuel they have to U4 is GTPlus which they also call GT104, we have had a few problems with the fuel so we stopped using it
I love the Chevron station a few miles from home.. VP race fuel 98 octane i believe. Just have to sell a nut to afford the stuff.
went through a few fuel pumps, when the fuel gets too hot it breaks down, i was getting sealed 55 gal drums and the batches were never the same, some times the bike would make great power (I have my own dyno) and some times it would make less than pump gas