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Properly functioning oxygen sensors are important when
it comes to your vehicle's fuel economy and exhaust
emissions. That's why checking for, and possibly
replacing, a worn-out oxygen sensor is an important
part of every routine tune-up. Plus, properly functioning
oxygen sensors are good for the environment, and can
save you hundreds of dollars in gasoline costs over the
life of the sensor.
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Worn out
O2 sensor
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New
O2 sensor
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Miles driven
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12,000
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12,000
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Miles/gallon*
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18.0
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20.0
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Gallons of gas
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666.7
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600.0
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Cost/gallon
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$1.30
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$1.30
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Total gasoline cost
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$867
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$780
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SAVINGS PER YEAR
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$87
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After 30,000-50,000 miles
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$217 - $362
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After 60,000-100,000 miles
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$435 - $725
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*Fuel Efficiency: Assumes miles/gallon improvement of 10% (pre OBDII vehicles).
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A worn-out oxygen sensor:
- Wastes fuel
- Can cause engine performance problems, such as surging and hesitating
- Is the number one cause of excessive harmful exhaust emissions
- Accelerates catalytic converter damage
Replacing a worn-out oxygen sensor:
- Saves money in fuel costs
- Improves engine performance
- Reduces air pollution
- Prevents premature failure of the catalytic converter
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