U of M study

For the life of me I can't figure out why diesel owner's continuously start these threads for the umpteen billionth time. It's like they need to repeatedly keep justify their decision to buy a diesel. You don't need anyone else's permission to buy a diesel. If your happy - great! If you're trying to prove something, you're not succeeding, so give it up. Those that want a diesel own a diesel, those that don't, don't. They remind me of hawkers at the county fair. The more threads they open the more I suspect they are trying to sell snake oil.