We found this with the help of a friend, and thought you guys might be able to use it as well. There is nothing more annoying than an engine that refuses to start. Nulon SYB should be kept on hand at all times in the glove box, in the workshop or in the home garage, the boat, or the tractor. One never knows when an engine will become stubborn and refuse, or be difficult to start. Nulon SYB will help preserve battery condition and it is totally harmless to engines. One short spray of Nulon is all that is necessary to start the most stubborn of engines.