It seems like the popular theory used to be that replacing the (upstream) oxygen sensors wasn't necessary unless they were on the verge of taking The Big Dirt Nap.
Is that still the general consensus (was it ever really?), or has it shifted to the proactive alternative of replacing after normal service life is up?
And what is their normal service life, 100K miles?
Inquiring minds want to know...we'll, one inquiring mind, anyway...who knows what's going on in the rest of those heads out there!
Is that still the general consensus (was it ever really?), or has it shifted to the proactive alternative of replacing after normal service life is up?
And what is their normal service life, 100K miles?
Inquiring minds want to know...we'll, one inquiring mind, anyway...who knows what's going on in the rest of those heads out there!