Originally Posted by orndog
First, it's not like "pouring... water", it's closer to a pressure wash. Second, oil contains detergents. Third, it was a "fact" that we would run out of oil in my parents lifetime. Yes, it does clean the insides. However, like I said before, I wouldn't change the filter, I would drain the old oil and just pour about 3 quarts in and let it idle for a while before draining.
Yea. It's just like a pressure washer, and don't forget the detergents. Let me change my analogy to fit yours. Try washing your car with soapy water (i.e. your detergents) with a 40 psi pressure washer and see how clean it gets. The whole thing is stupid. By the way, take it from an engineer that designs pressure washer pumps, it won't clean anything!
Are you trying to tell me that we aren't going to run out of oil? Do you understand the world economy and the scale that formerly third world countries are expanding? Check out the price of either oil or steel, and look back at who was buying most of that 10 years ago. China and India are booming in both businesses now, that's why my gasoline prices have more than doubled in the 10 years I've even been driving.
Back to the point. Don't waste perfectly good oil. What do you think is in there that's so dangerous; rocks!? Modern oils and their counterpart filters clean plenty enough stuff out of there for your engine to last for more than a decade. If you prefer Mobil 1, spend the 30 minutes and do it yourself. Let someone else use the oil at the dealership.