So each of us is supposed to spend money and time conducting 50K mile research tests on nitrogen, fuel magnets, duralube, etc. before we can conclude that these things are worthless scams based on solid scientific evidence of other people who have already done good research? Not to mention that most of these things can be discounted as scams using nothing more than plain old common sense.

Nitrogen in tires is one of those things that has a VERY tiny bit of effect that might make a difference in very demanding conditions like racing. But for consumer applications, it's a scam.

- Mark