Accepted Answer

I can remeber back 40 years and theese products come and go over the years-the so called endorsed products still do not work.The reality of the world is that oil runs it and any product that would actual work would be bought up tp either keep it off of the market or incorporated to the gas-Wouldn't you buy gas from a supplier that gives you 20 % better mileage then another?When people get desperate they belive in anything- therorie and teseting is differnt from actaul real life testing. And some of the aditive are down right damageing to the injectors and fuel pump.From what I read-it claims 7-19% improvement-but swutching from reformalated gas blends does that already,Also ther have been professionally trements around for years that will clean the injectors and deposits off of the internal engine.Look at the shell comercial for deposits on valves-if you take a engine that had been running low grade oil and fuel then clean the injectors,decarbon it and use the lastest graded fuel economy oil the mile age will go up.I know of a few poeplw that get 25-27 mpg in late modle chevy trucks with out any fancy fuel additive.

Edited by Frank on 4/23/2008 at 11:44 AM

Expert:	Frank
Pos. Feedback:	100.0 %
Accepts:
Answered:	4/23/2008

Auto Service Technician

33 years experience,25 with GM,14 ASE certifications,