Originally Posted by wolf_06
I just saw a big sign at a Mobil Exxon gas station, claiming 55% more cleansing agent in supreme 91 octane gasoline.
Hit the 91 octane button for 55% more cleansing agent, is what it says...
How is the customer able to get proofs of this? LOL
I would contact Exxon Mobil and ask them for documentation about this claim. Not literature or pamphlets, ask for documentation with real numbers related to their claim.
Originally Posted by domer10
Get a scope, look at your internals now....open your wallet and look at in a few months time. Either way if it works or doesn't they got your cash. I always run premium just for the fact that it does not contain ethanol, which burns cleaner, thus leaving less deposits or residue. Don't care about hp numbers etc. But it's proven than non ethanol gas burns far diff than regular.
These new turbo D.I engines I would run nothing but.
Now who knows with these claims. Off the top sounds a bit over the top marketing.
I'm not sure if you are saying that premium without ethanol burns cleaner, or that ethanol burns cleaner.
The reason ethanol is used in today's blended fuels is because the blended fuels burn cleaner than straight gasoline. It's about emissions and air quality. Unfortunately, ethanol has less energy content than gasoline, so more blended fuel must be used to make the same power (compared to straight gasoline), so using the ethanol-blended fuel reduces fuel economy. Yes ethanol has higher octane rating than gasoline, but octane and energy content are unrelated.
I agree about using blended fuels in the new turbo DI engines. And about the marketing hyperbole LOL.