Charlie, you been sniffing too may oil fumes? LOL. Yes, there's something very satisfying about knowing your baby's running on fresh oil. Not sure about the metaphor, it just feels good and gives you a feeling of security knowing you are doing all you can to maximize her time with you.Just changed my oil/filter. I can't describe the sweet, satisfied feeling, but purging the dark, toxic sludge and replacing it with clear, pristine oil, and screwing on a fresh filter... all this TLC must be a sensual or mystical metaphor for something...