Onan generator Carb cleaning, no need to replace carb.

OK made my way through all the responses. My gens have run good except for a 7500 diesel that lost all the glow plugs. I do run the gens over a 100 hours a year and think that's part of my good luck and do the monthly thing under load when we don't use it. But now to my question. Was thinking about running something just to be on the safe side. Is B12 or something like it OK for the injected V10, I hear carb, but I would just dump some in the gas tank now and then to keep both clean.

LEN