nitrogen will only interfere with complete combustion.
Not if it's chemically stored and the burning of it releases nitrogen gas. That would actually help combustion and would explain how it's supposed to clean engine parts better. The expanding gas would 'blow off' carbon pieces.
I can understand the concept of being able to burn a nitrogen compound and release it into nitrogen gas, therefore being a useful part of combustion. However, I fail to see how it would blow off carbon pieces any better than the burning gasoline.
Not to be rude, but does anyone here have any clue what they're talking about? This is all just armchair chemistry!
E85 gets less mpg because you have to use more of it! It has nothing to do with it's higher octane rating or power output. Where a stoichiometric mixture of gasoline is 14.7 parts to every one part air, ethanol is 9 parts for every one part air. That is why if you want to convert to E85, you have to increase the amount of fuel flowing into your engine (usually by increasing fuel pressure or upsizing the injectors and getting a programmable engine management system). But did you notice that E85 is (usually) cheaper than gasoline? Or it WAS anyway.
"Dislodged carbon" will go right out your exhaust.
And someone is suggesting the Nitrogen will cause tiny explosions to clean your combustion chamber... that is so silly.
Shell was always going for marketing gimmicks... Remember in the 80's they renamed all their grades of gas? There was RU2000, MU2000, and SU2000. Gasolines so revolutionary that they're patented until the year 2,000...