Thread: Octane Booster Fuel Additives - Opinions/Facts Needed!

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Originally Posted by Bob Parmenter

Shell detergent looks to be very effective as well.

Now I'm, again, disillusioned - that they have something else? Shell has been saying for the past couple of years that their big cleaner/upper is .... nitrogen !!! Both Kevin Harvick and Kurt Busch said so.

Originally Posted by IC2

Now I'm, again, disillusioned - that they have something else? Shell has been saying for the past couple of years that their big cleaner/upper is .... nitrogen !!! Both Kevin Harvick and Kurt Busch said so.

Yeah, my guess is they have a detergent that contains nitrogen molecules.......whoopie......but it makes for a marketing differentiation perhaps. Sorta like the old Pennzoil promotion of Z7 which was essentially the same/similar ZDDP anti-wear that any quality/qualified oil had, but they found a "clever" way to promote it. If you're interested in reading a bit more about detergents in gasoline look up "top tier detergent gasoline".