There are differences - that's true but, it is a remote possibility that fuel octane is the reason the engine is failing emissions tests. I've run premium for years and mine tested in July 2005 as clean as most late model cars with 60,000 miles and the original converter. Harold McElraft - 3354 --- In dmcnews@xxxxxxxxxxxxxxx, mike.griese@xxxx wrote: > > Right - just like there are different kinds of metals, different kinds of tires, > different kinds of glues, diffefent kinds of spark plugs - they are all different, > that's all. > > There is a reason to use higher octane gasoline, just like there is a > reason to use lower octane gasoline. Cars that run higher inlet 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/