September 12, 2012 10:20 AM | By Mark Toljagic for MSN Autos
10 ways to save gas without switching your car

Tuna engine



Tuna engine (© Photo: Nick Daly / Digital Vision / Getty Images)
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  • Know your air conditioner (© Photo: Car Culture/Car Culture Collection/Getty Images)
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You can tuna fish - and tuna engine. With today's extended maintenance intervals, some motorists are forgetting about that lump under their hoods. Replacing air and fuel filters is still important, but thanks to onboard computers a new filter can restore acceleration but will not impact gas mileage. A more critical component is the oxygen sensor, which samples exhaust gases to determine the state of tune of your engine. A bad oxygen sensor can increase your fuel consumption by up to 40 per cent. The OBD II system will alert you when a sensor is bad by lighting the dreaded Check Engine lamp. Heed the warning and take your vehicle in for a diagnosis right away. Most vehicles have two sensors downstream in the exhaust system, and are designed to have a service life of between 80,000 km (unheated) and 160,000 km (heated).

Bing: What does a complete tune-up consist of?

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A 1967 Shelby GT500 Super Snake sold for $1.3 million. Do you think classic cars were made better than modern rides?

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