When it's below 50 degrees F the Mustang makes a ticking sound when idling. It sounds like a lifter is floating. Once it warms up out the ticking stops but this year I thought I would try to do something about it. So as per my brother's suggestion I went and bought a bottle of Sea Foam. He swears by the stuff. This stuff is an engine treatment that you can add to the gas tank or the crank case. I bought two bottles and did both.
The next day I started up the car, let it warm up, and then drove to work. On the way there the ticking wasn't present. I thought, "Great at least it's quiet at the stop lights." But then on the way home that evening the ticking was back. So I assume the Sea Foam did nothing.
Makes me a little nervous that this happens every year, especially since the car's miles are getting up there.