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Mixed debate continues over the efficiency of fuel saving additives in auto fuel economy.

Cars falling into certain categories, such as older models, high performance motors or vehicles which are left standing for long periods, certainly benefit from fuel saving additives.

Fuel saving additives generally claim two major benefits. One is cleaning the engine. If your vehicle has been run on poor quality fuel for a long time there may be a case for using a fuel saving additive.

Critics are skeptical whether the claims that using fuel saving additives to improve auto fuel economy results in less unburnt fuel leaving the exhaust and a faster burn.

The hydrogen gas saver, however, is a product that has generated a lot of interest in recent years where fuel economy is concerned.