Gaud29 You need to test the gadgets like you are trying to disprove them , not prove them.
Many people attribute real mpg gains to their gadgets when it is really their unconscious mind driven smarter with the favored gadget in place.
You need to be a skeptical critic to test thoroughly and not behave like a fan or father of the device, it would fudge the results , be careful testing and test carefully.
welcome to the site ! check out the unicorn coral for the scam items that are designed to make money , not save money or fuel.
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Save gas
Ride a Mtn bike for errands exercise entertainment and outright fun
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