O2 Sensor Change on 3.8L...What Mileage?
When is an oxgen sensor change required on a '96 Cougar 3.8L?
Car has 60,000 mi.
Looking up the maintenance schedule at Advance auto parts site it gave no interval.
The new ones listed in Advance Auto parts replacement parts section, stated they had a change interval of either 60 or 100k mi.
So what is it, does a light on the dash come on when it is time?
Apparently the two on the car are both downstream of the cat, which appears odd.
Thank you in advance for your replies.