They aren't the only makers that don't state the oil content and Tower is only the distributor, not the maker. Hyflyer just mentioned Omega, another very good fuel. Pull up there web site and see where you can find that in your area, try Byron fuels too. When I lived way out in the country I always had A list of needed items and when my wife and I would make the trip to one of the big citys we went to the different shops just to stock up. If you hit A Hobby People up on A three day weekend they have A great fuel sale, 15 bucks A gallon for 15% PM. If by any chance you go to A good Pattern or IMAC, maybe an IMAA show there you should be able to find some great deals on fuel and parts, batteries and props.
Give the search A try and see what is close to you.
