Re: system4 fuel saver- does it?

Mike wrote:

Hi- thanks- I'll take that as a 'no' then (lol)
(They are still claiming the leaded thing also)
I thought it sounded too good to be true-Don't know how they get away
with it- you would think someone must have contacted trading
standards- and from what you say they are unlikely to be able to
provide proof of their claims-

There are several ways that they manage to delude people into thinking that it works. The lead thing relies on the fact that most old cars will run happily on unleaded for a few thousand miles before any damage occurs. (My Triumph Vitesse has done at least 15,000 miles on unleaded with no additives.)
Increased fuel efficiency claims probably rely on people following the installation instructions to the letter. And since those instructions will involve giving the car a damned good service, it's hardly surprising that it runs better afterwards.

I fell for something similar once when I was young and naive. It was an oil additive called Slick 50 (may even still be around). Once "installed" and having checked the plugs, timing, carb settings, etc., I studiously drove for 20 miles at exactly 40mph as instructed, and would you believe, my old Viva managed 45mpg! Amazing.
.

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