Hello all
Looking for some opinions. About 6 weeks ago I noticed some engine ping while accelerating, especially with the AC on. I had been using 87 octane, so I switched to super. I have since filled up 5 times using super unleaded, and still have the engine ping. I even added some gumout octane booster, no luck. Also, except for the occassion of pulling out into traffic, or merging onto a highway I am very soft on the gas pedal, yet Im only averaging 12.4 MPG/city. Local driving for me consist of alot of stop signs, and lights, but I see others are averaging 4, or more MPG better than me. Any thoughts, or feed back will be greatly appreciated. Thanks
John