o2 sensor
5 Hacks Automotive Diagnostics Cut O2 Costs
Swapping a faulty O2 sensor on a turbo SUV can often add 5-7 MPG and save owners thousands in fuel costs. In my experience, a quick OBD-II scan followed by a sensor replacement resolves most emissions-related issues, turning a costly repair shop visit into a DIY win. Automotive Diagnostics Playbook