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While this is not necessarily unique to Viking engines I thought it would be as good a place as any of the forums to ask the following questions.
Since most newer automotive engine systems use O2 sensors and knowing that leaded fuel fouls O2 sensors, (given that we will occasionally have to use leaded fuel) I would be curious to know:
1) How long (hours) before the O2 sensor goes bad?
2) What are the signs that the sensor is going bad?
3) Is you experience based on the narrow band sensor or the wide band sensor?
I am hoping to hear from folks who have first hand knowledge of this and to hear some details beyond "don't worry about it".
As a follow up ... just in case someone did not see it Jan clarified (in a separate thread) that the Viking engine systems do not use an O2 sensor. I was unaware of this and had I known I would not have posted the question on the Viking forum. Oh well, good info for those who may be curious about the process.