O2 Sensor/Fuel Sending Unit/Gas
I had to have my "fuel sending unit" replaced last October. I would fill up my tank and the very next day I would be at the mid pt as far as the gas gauge goes...so the dealer replaced that and the fuel reading was no longer erratic.
My question is whether the Fuel Sending Unit is the same thing as the O2 sensor? I heard replacing your O2 sensor can improve gas mileage by up to 15%...any one know about either of these 2 things...or it if they are the same thing...