--- In dmcnews@xxxxxxxxxxxxxxx, "Tom Niemczewski" <tomciodmc@xxxx> wrote: > > >> Is this a bulletproof enough source? :) > > Yes, but looking back on what I wrote I was apparently not clear > <SNIP> > > Okay, so wouldn't higher combustion temps burn off these deposits? > **** > Ok, you would be right in this case... it seems logical, but you are > forgetting one thing. In case of the engine the time of the burn is also > important. This means that all gasoline needs to be burned in a > predetermined amount of time... > Makes sense? ;) Yep > > Also, my previous question still > > remains. If you have an engine that has been run for a long time on > > higher octane fuels than required, and it now has these deposits built > > up that have raised it's compression as a result. Wouldn't suddenly > > running it on lower octane cause, or run a higher risk of detonation > **** > YES, You are right. It might cause knock when you switch to 'regular'. It > the engine has been run on premium for a long time it will sound much worst > at first. BUT with the raised compression and now faster burning fuel the > deposits will be cleared out of the engine pretty quickly. That is why I > advised to go on a hour long drive at highway speeds. Detonation and knock > usually occur at high loads (heavy acceleration). Cruising at constant > highway speed does not put a lot of load on the engine and at the same time > keeps it running at high RPMs. Great exercise for the engine, clears any > deposits, moves a lot of gas through the converter clearing it as well. How about moving down to 89 first, then 87? > I would like to congratulate everyone who got this far reading my tech > stuff. You must be really TOUGH! ;) Tom - Just so you know, I was not trying to debate you or say you were wrong. I'm just trying to understand. Dan W. VIN 16192 AZ-D To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/