The next time you take your car in for a checkup, don’t be surprised if your mechanic recommends putting nitrogen in your tires. He may claim that it will improve your fuel economy and extend the life of the tires - but don’t spend the extra money.

Here at ETR, we’re not automotive experts, but we are skeptics - and at least one anecdote we read suggests the difference is minimal, if there is one at all. So view that upsell with a cautious eye. And remember… plain old air is mainly composed of nitrogen to begin with.

(Source: The New York Times)

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