With all of the increases in oil and gas prices I was wondering if any of you had heard of anyone burning waste oil in their trucks. My uncle has a 6.5L Hummer that he runs strait waste Dexron with a some type of Stanadyne additive. He just bought the Hummer 6 months ago and reports no ill effects. He also has a customer with a 6.0L Powerstroke who does the same with no reported ill effects. My uncle owns the Jiffy Lube in Canyon City, CO and has access to all of the waste Dexron a man could want. He says just filter it before you put it into your tank and you are so money you don't even know. What do you think? Any words of advice or horror stories?