Originally Posted by jackei
DAY 3 - 150 miles
My question is: Although it is not doing what it supposed to do, lack of power, not firing at the ideal timing, if it is able to do the adjustment and compensate the timing error, and it is running very smooth in fact (I'm talking about normal city driving, not racing) does it really cause any damage? (Just a though, I will go back to premium gas after the test).
As Guy III pointed out in another thread, regular fuel runs "hotter" than Premium, thus over time it could eventually burn a hole in your piston.
How long, probably depends on the type of driving you normally do, how fast, and the type of terrain you're driving over.
If you're only going to experiment with it for awhile, you probably won't do any long term harm.
I don't doubt that thanks to the higher fuel cost that we've seen this past year, that alot of people have tried, and still use lower octane fuel on a regular basis in their Crossfires, and just don't tell anybody (here on the forum about it) since they may want to try selling it here at some future date.
That's one of the reasons I prefer to purchase most of my cars brand new. You just never know what you might wind up with.