I recently noticed that I was getting about 1 MPG less for mixed driving and so I figured it W's time for a tune-up. I had a faulty pcv valve replaced, new spark plugs, new coil connector, and oil change. Now, I get 2 MPG less on mixed driving and 5 MPG less on highway. I think the mechanics are honest, but I think they missed something. Can you give me some thoughts on what to have them check?
Thursday, October 25th, 2012 AT 2:20 AM