You guys know that Marauder "engine tap" that so many of us had? Well mine, oddly, disappeared! I had it sitting in my driveway for over a year. I'd start it only once every few months. So, last week, I finally get some new tires and wheels (the reason it was idle—first one, then, all four tires went flat, and I just couldn't decide on the wheels). The first thing I do then is, I go to do an oil flush and a fresh fill of Mobil 1 5W-20 (which it always got filled with). Now . . . no tapping. Wonder why?