"...If you find this article informative, if you think it might save you a lot of money down the road (and we hope it does!), then we ask that you consider paying for one of the oil samples. It's $20.00, a low cost if each person just buys one. We'll put your name next to one of the analysis results so everyone will know what a nice person you are. Write us if you're willing to help defray the costs of this study. We're PayPal-friendly."
Yeah, REALLY pay pal friendly.
It makes no sense that dirty oil would be better and clean oil would hurt your engine.