Hi all. I'm about to buy that OTC 7448 tool that hooks inline to your injectors and cleans them while the engine runs. I know their brand cleaner will run the engine, but it's way too expensive to justify buying that for all the vehicles I service. What would be a good cleaner that would actually burn well enough to run in the engine? I know Seafoam won't work, and I've lost stock in them anyway. I'm thinking of getting a gallon of brake clean, but have no idea what kind of havoc that extremely harsh solvent would play on the injectors or if the engine would actually run on it. Basically if I can't walk into an auto parts store and buy it off the shelf without having to wait on it to be delivered, I'm not interested.