Have any of you had good results using Lucas fuel additive on a regular basis? I was wondering if it really helps with increased mileage.

 

I use a bottle of Chevron w/ Techron at every oil change. Fuel addative used as a preventative maintenance measure will keep varnish and other fuel contaminants from building up in the fuel system. As a quick fix, they are absolutely worthless. Once diluted in a tank of 18 gallons worth of fuel, they are of no concentration worth speaking about to try to break up large amounts of gunk.