My friend heats his with used cooking oil for the past two years.
Oh, I change my oil and filter every 5,000 miles on every car I've had since 1976 and never had a problem. This includes, Nissans, Olds, Datsun, Pontiacs, Honda and Chevy cars and trucks. Currently my 2000 Silverado had 170,000 on it and I just changed it last week. Still will hit a 100 in a skinny minute! I might add that the Olds above was a disel and I did the same on it. I also put 165,000 to 225,000 on each of the above vehicles and never had any mayor engine problems...at least not associated with oil. Just my .02 worth. I like being safe but I don't like giving my money away either! I guess its "to each his own".....but I do like the change every time we change the clock for those who do not drive much. I would like to add for those that don't drive much at least run it long enough each time that the engine gets up to operating temperture for obvious reasons.
