(Retransmitted due to rejection of the HTML in the website addresses-someday I'll learn) After visiting the staginglight site, below, I then spotted this interesting site by an Englishman and it provides some additional detail on raw gasoline, tetraethyl lead and MTBE. Tetraethyl lead and oxygenates such as MTBE, methanol and ethanol do add energy to the combustion process, but are lower in energy content than gasoline. http://www.chm.bris.ac.uk/motm/leadtet/leadh.htm One of the commentators spoke to water injection in bomber engines and indicated the oxygen in the water was used in the combustion process. Not, so, to my knowledge. The water would not break down in the combustion process. The water injection was required to cool the combustion chamber temperature of highly supercharged engines that were designed for operation at high altitudes. During takeoff at lower levels with the heaviest bomb and fuel load, the engines would be damaged without the water, which of course turned to steam and sopped up excess heat energy during takeoff and low-level flight. Water injection is also used to cool the inlet air by evaporation in certain combustion engines, especially gas turbines driving electric generators that lose a lot of power at high ambient temperatures. Careful dosing of combustion air with distilled water will cool the inlet air of any engine, thus increasing its potential power output. Hard or soft water will likely leave its mineral content in the engine. Rich Barber Brentwood, CA 1955 CCC Chuck McGill wrote: Hi Gang, Here's some interesting reading on the subject. http://www.staginglight.com/guide/octane.html May your new year be your best year. Chuck San Jose, Ca. ------------------------ Yahoo! Groups Sponsor --------------------~--> To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/