http://www.caranddriver.com/article....&page_number=1
I never really believed that the additives and detergents in higher priced gas were worth the "hype", but this article in Car&Driver changed my mind.
If you think about why auto manufacturers would create this TopTier designation it starts to make sense. It's not some shady deal with the big oil companies to promote their gas, it's to reduce expensive warranty claims on engines and fuel systems that get messed up by lower quality gas.
In the end all gas basically burns the same (because its pretty much all going through the same pipelines to get here) and will produce the same power, unless you just get a bad tank that is contaminated by moisture or something.
But from now on I'm going to put a couple extra bucks in my tank so my expensive injectors don't get clogged with deposits.
