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Advantages

Is very easy on the engine, giving longer service life and lower maintenance costs

Is the least expensive alternative fuel (except electricity) when equal amounts of fuel energy are compared.

Is the most effective fuel for reducing emissions in an internal combustion engine

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Disadvantages

The tanks are very bulky and heavy.

Range is significantly less than for an equivalent gasoline vehicle

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Emissions Reduction

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.emissions of carbon monoxide are approximately 70% percent lower.

non-methane organic gas emissions are 89% percent lower.

and oxides of nitrogen emissions are 87% percent lower.

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