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For the few bucks a bottle will cost, sure, I'll give it a whirl. It certainly won't make the engine run worse. :) Good call. These engines have a return line from the injectors to the tank. Does anyone have an idea how much fuel it should bypass back to the tank?

I'm curious if you solved the problem? I have a one year old 2501, 90 hours on the clock. I've had multiple occasions where it begins to stumble, miss, smoke slightly, and lose power while under load. Local dealer inspected and can not find an issue. It very clearly stumbles and begins running...