Gasoline-Long, somewhat opinionated but highly illuminating

[dardal@xxxxxxxxxxxxxxx]

Quoting James <nyb@xxxxxxx>:


> of VOCs directly entering the atmosphere, from filling stations for
> example.  However, it also increases the amount of fuel that enters the
> gas phase in the combustion chamber, meaning that more of the fuel that
> goes in gets burned and fewer VOCs exit the tail-pipe.  There are far

James, once the engine gets warm, it does not care about the volatility of the 
gasoline (during compression, the gas temperature gets high enough to evaporate 
everything).  If however the fuel is more volatile, you will have an easier 
cold start (especially in my Imperials where I have the choke disconnected).  
That's wy in winter gas they use more volitile blends while in the summer less 
volitile blends to reduce evaporative emissions.  However, when the engine 
warms up, the only thing that limits how much of the fuel gets burnt is the 
amount of oxygen in the cylinder (ie if the engine is not running lean, ALL of 
the O2 will react).

As for the rest of the argument, I have no opinion since I am not a chemist.  
All I know is that these additives can deteriorate old hoses, fuel pumps, and 
other parts of the fuel system, so I whish they were not there!

D^2