We had low mileage in our otherwise 37-40 mpg Ford Fusion. Brought it in for a look-see, and Zia found several problems including a cracked gasket that was spraying oil on the spark plugs; fixed them right away, no games. We are going on a long road trip so appreciated the comprehensive that came with the oil change, revealing the need for brake work in the rear. Brought it out on the road and mileage improved right away, back to normal. Thank you.