Calling all LINKers !!
I first replaced the O² sensor at 68,000 kms and now the rex has done 78,000 kms and the sensor is stuffed again ? I understand from Mark that he's had several stuffed O² sensors the whole time he's been running the Link ECU. My Subaru dealer who's big on modifications says prior to cars fitting Link ECUs, they have never had to change O² sensors and these days they have to stock more due to increased demands.

I am under the impression that O² sensors are typically prone to heat damage. Is it also possible that running too rich is also unhealthy for the sensor ? One of Link's problems is idle control on earlier Subaru models, and it's nearly impossible to idle lean without compromising idle stability.

What other reasons are they for such short life span ? I recently blew a radiator hose but that was promptly replaced. The engine didnt even have a chance to overheat before i shut off the engine although coolant was oozing out of the big hose from what appears to be a 0.5 cm tear. Tell me there's a way to not have to change O² sensors every 10,000 kms !!