I also run it. You can order if from Amazon,.. real easy.,. They added a small percentage of caster oil. The case I bought this year has the castor. Last year it did not. Don't know that I see any difference but maybe the bearings will last longer.. Runs fine for me.. no issues.
Ive used their T2-R in my old banshee and it was good stuff -- called the company over it and its basically old formula yamahalube (torco also makes yamahalube for other countries but not the US) same off the shelf cost of yamahalube but Im switching up to klotz this year---I know its not nitro but good to go for gas mix