I agree with PipeMajor on this one. Don't buy fuel that doesn't tell you what's in it.
I run 18% oil with castor blend. Same fuel for break in as for flying.
Oh and PS:
I think it was someone else that I warned about the price of Tower fuel so I will make my speach again.
Tower currently sells fuel by the quart @ $6.99 to avoid surcharge on shipping. at that price plus towers shipping cost you are pay well over $30 for a gallon of fuel. Double what you would expect to pay at most local hobby shops. You will burn through the fuel, a quart won't last long. Find a hobby shop within an hours drive and buy a couple of gallons and it will be worth the trip. I buy my fuel by the case, 4 gallons, and pay about $12 per gallon.