O2 Sensor Info!!!!

[XJNASH]

O2 SENSOR REPLACEMENT FOR PREVENTATIVE MAINTENANCE

To minimize the consequences of normal aging, Bosch recommends oxygen sensor replacement for preventative maintenance at the following intervals:

Unheated O2 sensors on 1976 to early 1990s application: every 30,000 to 50,000 miles.
Heated (1st generation) O2 sensors on mid-1980's to mid-1990's applications: every 60,000 miles.
Heated (2nd generation) O2 sensors on mid-1990s and up applications: every 100,000 miles.
Keeping the sensor fresh may improve fuel economy as much as 10-15% (which can save $100 each year in fuel costs on the average). Keeping the sensor in good operating condition will also minimize exhaust emissions, reduce the risk of costly damage to the catalytic converter, and ensure peak engine performance (no surging or hesitating).

For these reasons, the O2 sensor should be considered a "tune-up" replacement item just like spark plugs, especially on older vehicles (those built before the mid-1990's).

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