wide band o2 sensor vs 2 stroke oil

[randy 77zt]

i found a mixture meter that runs a 5 wire bosch o2 and can record 44 minutes of run time.will the 2 stroke oil kill the o2 sensor?i run penz full synth at 40/1.the data logging will allow me to drive and check later.best to watch where you are going at 100+.

[gfinch]

Correct me if I'm wrong, but didn't Suzuki use 6 o2 sensors. I expect they will become contaminated over time. I know in automotive useage, silcone spray or sealer and antifreeze will kill them. Some of the new o2 sensor heater circiuts draw upwards of 15 amps. Good Luck!

[Markus]

Randy, we were once in contact with a maker of automotive O2 sensors. When asked how long they would last in a 2-stroke outboard, his answer was "A couple of minutes". You can clean them with a torch and re-use them a few times though.

Yamaha uses O2 sensors with the OX66 fuel injection system and they evidently work. A Yamaha junk yard can sell you some, but last time I asked they were really expensive.

[VectorPat]

Yamahas O2 sensors have heaters but they dont draw that much amperage..They are mounted on the side of #1 cylinder and there is a hole that goes into the cylinder for the sensor to read from.. They do not like alot of oil or idling for long periods and also need good voltage.. I wouldnt trust a used one and they are expensive, like 250ish!!!