Had a call from a guy selling MaxFlo diesel addative. Supposed to reduce fuel use by 20%, cleaning injectors and making the fuel flow easier. Couldnt give me a website to check it out. Anyone ever hear of this? Sounding too good to be true. When I asked for their number he hung up.

Got me thinking with the high price of diesel is there any addatives out there that actually help that make it worth the extra $$ to treat fuel?