Should I be worried?

[phlydude]

I had my truck in for service a couple weeks ago for a bad O2 sensor.
Now you guys have me scared after reading about bad cats and possible head gasket leaks.
I have 69k miles on the Titan and when the sensor was being replaced, they said they had to add a little antifreeze during the fluids check during oil change.

I have been smelling antifreeze (radiator replaced @ 30k) for a while now but am not getting any noticeable sweet-smelling white smoke during start-up at all.

Should I be worried or should i just chalk it up to a O2 sensor that went bad a little pre-maturely?

I have 3 more years of payments on this thing and I can't afford a 12k engine (out of warranty).
Thoughts?

[konigfritz]

hell, mine smells a bit like antifreeze everytime it gets warm (outside). But it's not low. dunno. There have been a few cats go, but not alot. some were caused (possibly) by other exhaust mods.

Good luck