Fuel-Saving Devices Debunked: Dynamic Ionizer, Fuel Doctor FD-47, and Three More Tested ? Gearbox

Fuel’s Gold: Too good to be true? The key to any hustle is a believable story. It?s no different with fuel-saving flimflams, which often claim to exploit some small, overlooked factor that automakers or oil companies don?t want you to know about. Normally, we wouldn?t give a second thought to fuel-economy hucksterism, but our dedication [...]

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Naoki Hattori Paul Hawkins Mike Hawthorn Boy Hayje Willi Heeks