986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - A Primer on O² Sensors

mikefocke · 03-15-2007, 01:36 PM

in periodic refreshes of the O2 sensors rather than waiting till they CEL.

Any independent testing done that verifies this notion of a 60k life cycle? Or that the pre-cat ones fail first? Or that they should be replaced as pairs (both pre's, for example)?

After all, replacing all 4 will buy more than 200 gals of gas at dealer rates.

03-15-2007, 01:36 PM	#10
mikefocke Registered User Join Date: Aug 2005 Location: Sanford NC Posts: 2,582	Of course Bosch has a vested interest in periodic refreshes of the O2 sensors rather than waiting till they CEL. Any independent testing done that verifies this notion of a 60k life cycle? Or that the pre-cat ones fail first? Or that they should be replaced as pairs (both pre's, for example)? After all, replacing all 4 will buy more than 200 gals of gas at dealer rates.