IIRC the mean time before failure on leaded gas is something like 25,000 miles for a good O2 sensor. You will certainly go through them faster. My question is, leaded gas shows richer on my A/F guage. Is that a false reading or is it in fact running richer?
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WTB: 96-07 Nissan Pathfinder parts;
Hood
Left front fender
Left headlight
Radiator
Condensor
Bumper Cover
Grille
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