So .... my car had a 'knocking' sound like I remember from using low-test fuel many years ago. It only happened when my car would need a little effort. heavy gas, nope...... cruise control ...nope ...but press the accelerator just a little .... well, I call it a knock. Took it in to be looked at, John takes a ride in the car with me and I reproduce the symptoms. He say "might be a belt" ... I think... BELT??? WHERE DO YOU GET ABELT FROM THAT??? I, of course, asked a little more professionally. Sure enough, a replaced serpentine belt later, all was right in the world (well, at least car) again... YEP, my "go to" guys are Maxi Muffler
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