In the interest of maintaining my car, I want to clean my O2 sensors. Currently there is nothing wrong with them, no CEL or anything else, I just want to make sure things stay that way and I want to increase fuel economy. As one of my O2 sensors is right on the exhaust manifold in the front, I can't imagine that it is particularly clean after 15 years and some carbon must have accumulated. How would you recommend that I clean the O2 sensors?
Thank you in advance,
CCM