Elmo P. Shagnasty wrote:
> In article <gpf7nh$6kp$1@news.motzarella.org>, "P J" <pj@pjama.invalid>
> wrote:
>
>> Shell is promoting its new nitrogenized gasoline as an engine cleaning
>> formula. Anybody knows if this is for real and how nitrogen could
>> accomplish that? I've been favoring Chevron for its techron content for
>> the same reason.
>> pj
>
> I can't speak for the nitrogenized gasoline, but I started using Shell
> several years ago, based on their cleaning claims. I discovered that
> whatever it was, Shell gas was cheaper to run than other fuels.
>
> I started with a few tanks of their Ultra, with extra cleaners, to get
> things clean (this was a 94 Lexus with 130K miles on it). Then I
> switched to their 87 octane, and ran nothing but that. I was getting
> better mileage than I did on other fuels, and even accounting for the
> fact that the Shell was a bit more expensive to buy, it was cheaper to
> run.
>
> go figure. I think their claims are legit--but they were so even before
> claiming this "nitrogenized" fuel.

i started keeping fuel logs a few years ago, and indeed, averages for
shell are better than chevron, the other one i've run extensively.

but i have no idea about this nitrogen thing though. some interesting
blog comments here:
http://forums.vwvortex.com/zerothrea...ostid=55935549