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11606, Do a Maintenance Checkup, Horizontal, gas pump

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An automobile is a major purchase.

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Transmission Flushes

Replacing transmissions is expensive, so transmission flushes can sound like a smart investment.

Stick to the recommended transmission fluid changes from your owners manual.

Nope, said Farrell.

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Fuel system cleanings, for $100 to $150, are redundant sincemost modern fuelalready contains detergents.

Use top-tier gasoline and follow factory maintenance schedules, he suggested.

Octane booster additives are way overpriced compared to just purchasing higher octane fuel.

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Before you know it, youre wasting hundreds of dollars a year on additives.

It may do a little but nothing in comparison to the extra charge for the fuel, Pyle said.

The gains are short-lived and the long-term damage is major.

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The idea is to remove sludge and deposits from your engine.

Instead, spend the money onregular oil changesand you should be fine.

But, said Giranda, this is usually not true.

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