Drove my car for the first time in about a month today. I pretty much store it for the winter with a battery charger hooked up, but we had a super nice day so I decided to take it for a short drive long enough to get everything warmed up. I was pleasently surprised in that I didn't have any noticeable ping when I opened the car up through a couple of gears. It was cool this morning at about 40 degrees so I'm wondering if that was one of the reasons why. Needless to say I was happy about it and enjoyed the drive.