Originally Posted by HOTRODHARLEY
I use Lucas Fuel Treatment as well as Lucas Ethanol Fuel Conditioner with Stabilizers on every fill up. Modern fuel sucks to say the least and I trust these additives to help combat the negative affects of ethanol based fuels.
This is what I have been doing and I seem increased mpg roughly 1mpg and works out to be barely cost effective with a few cents, i.e. cost of fuel plus additives out weighs the cost of fuel and lower mpg but just barely. I have had people tell me this could be bad for my engine and also the additives cut the octane of the fuel. I'm running a 91 tune on 04 hemi, so I am curious if anyone else has heard that?