Meat Plow wrote: ...
I'm having a hard time figuring what their answer would be based on, specifically...granted, the engine-fuel additives are way overkill for a boiler burner, but in general the detergents and so on would help clean burner tips as they do injectors, the EPA requirements on S, etc., are designed for reducing emissions, etc. That they would undoubtedly be more effective in a higher performance application I agree, but still can't see it being of any significant difference--just extra $$ up the flue, in general...