Ive shown this to a few of my friends and they are always blown away when I show them the idea. Just wanna see if the oil fans have ever caught on to this. Most new cars have 2 trip odometers, never understood what the point of that really was. Anyway so I use my second trip to give me an exact mile count on my oil. I love watching the miles grow and I get excited to watch each thousand roll over. Its a lot better than doing math.