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Leaded fuel kills O2 sensors?

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Old Jul 23, 2008 | 12:07 PM
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Default Leaded fuel kills O2 sensors?

I did not know this - click here for article. Learn something new everyday in the world of FI...

For those of you running closed loop feedback w/ your standalone EMS, this is something to consider. Just cause you have gone cat-less doesn't mean you're off the hook. Hope those sensors are easy to get to!

ok, back to work folks!

Leaded fuel contaminates wide-band sensors after about 200 hours of use. This makes them suitable for short tuning sessions on the dyno and limited use on track, but not for an entire racing season.

Last edited by rcdash; Jul 23, 2008 at 12:10 PM.
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Old Jul 23, 2008 | 12:42 PM
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well that sucks...good info though.
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Old Jul 23, 2008 | 01:45 PM
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Why would you run leaded fuel in your z anyways?
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Old Jul 23, 2008 | 02:09 PM
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Originally Posted by 05Z33
Why would you run leaded fuel in your z anyways?
C-16 for guys who like to go fast on the track
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Old Jul 23, 2008 | 03:25 PM
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Yeah well...if you run meth, the only difference c-16 would make would be the sweet smell and the light grey colored exhaust tips.
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Old Jul 23, 2008 | 03:29 PM
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How about if you run nitrous and C16 and TT
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Old Jul 23, 2008 | 03:36 PM
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C16, 110, or any race gas is ususally always the prefered method of octane over meth. Reason being what if something goes wrong with the meth pump....boom.
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Old Jul 23, 2008 | 03:38 PM
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Originally Posted by rcdash
I did not know this - click here for article. Learn something new everyday in the world of FI...

For those of you running closed loop feedback w/ your standalone EMS, this is something to consider. Just cause you have gone cat-less doesn't mean you're off the hook. Hope those sensors are easy to get to!

ok, back to work folks!
Where have you been?
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Old Jul 23, 2008 | 03:46 PM
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Originally Posted by thawk408
C16, 110, or any race gas is ususally always the prefered method of octane over meth. Reason being what if something goes wrong with the meth pump....boom.

Where have you been??
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Old Jul 23, 2008 | 03:47 PM
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That c16 is pricey. I was at VP filling up on some 103 the other day, and I glanced over at the c16. That stuff was 14.95 a gallon.
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Old Jul 23, 2008 | 03:49 PM
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I've run leaded through my car plenty of times. I've had no problems with my O2.
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Old Jul 23, 2008 | 03:55 PM
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Originally Posted by one350zfan
I've run leaded through my car plenty of times. I've had no problems with my O2.

off subject but what size prostars/tires do you run? Im looking to get that exact setup.
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Old Jul 23, 2008 | 05:02 PM
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Originally Posted by coachk
Where have you been??
O sorry, i was talking about fast cars. You wouldnt understand.

Last edited by thawk408; Jul 23, 2008 at 05:04 PM.
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Old Jul 23, 2008 | 05:16 PM
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Coulda sworn this was common knowledge. Every time I'm at the strip that's all I hear people say "that **** will kill your o2 sensors"!

Small price to pay...
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Old Jul 23, 2008 | 05:19 PM
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Originally Posted by taurran
Coulda sworn this was common knowledge. Every time I'm at the strip that's all I hear people say "that **** will kill your o2 sensors"!

Small price to pay...

+1 even my local shop don't recommend running pure C16 at the track or all the time since it will kill the 02 sensor overtime.
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Old Jul 23, 2008 | 05:20 PM
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o2 sensors are overrated
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Old Jul 23, 2008 | 05:20 PM
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Originally Posted by JETPILOT
Where have you been?
What? No one ever volunteered that pearl of wisdom while I was in ear shot! I'm running cats anyway. I was just chasing down a CEL and came across that article. With the recent topics on closed loop tuning and widebands, I thought all you tree killers in this forum should at least be forewarned, just in case...

I gotta read more I guess

Last edited by rcdash; Jul 23, 2008 at 05:28 PM.
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Old Jul 23, 2008 | 05:21 PM
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also softens your valve seats and does a few other things if consistently running leaded
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Old Jul 24, 2008 | 05:29 AM
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Leaded fuel makes a HUGE difference in o2 sensor life. Too much heat will also damage them.
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Old Jul 24, 2008 | 06:48 AM
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Originally Posted by thawk408
O sorry, i was talking about fast cars. You wouldnt understand.
I meant where have you been,since I haven't seen you post for a while.
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