o2's for racing fuel
The factory sensors are supposed to be able to exposed to about 50 hours of lead exposure before they go out.
NGKs O2 sensors claim to have much higher tolerances for lead and other additives than factory sensors. I switched mine over to the NGKs and haven't had any issues with it. I've been running 100 unleaded in my car semi-frequently without any serious issues with it thus far. Basically I run 100 unleaded when I plan on spraying instead of pulling timing. Ghetto, I know.
Race fuel (leaded) fuel on a mostly factory car is essentially useless, and in the long run will cause more detrimental effects than positive ones.
NTK Oxygen Sensor on Summit
Have you noticed that is why the price of regular 93 Octane will fluctuate but the price for 100 unleaded rarely changes? There is very little of it that is actual "gasoline"
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its almost %3 a liter here for MS103 99 oct torcco.

DAMN! We are paying $7+ a gallon for that here! I got 7Gal in the car right now!
its almost %3 a liter here for MS103 99 oct torcco.
NTK Oxygen Sensor on Summit
Is that a universal O2, or doest it have the factory flat 4 plug on it?







