Quote:
Originally Posted by 5cents
Unless he forgot to mention it, when the saleman was explaining things on my new 2011 Camaro 2SS, he never said anything about using premium gasoline. So, I kept using the "regular" 87 octane. I was reading my owner's manual the other day and in there it recommends "premium" with a 91 or higher octane rating.
My Camaro doesn't "ping or knock" using the lower octane, So, my question is, is the higher octane really necessary?  |
Doesn't it say on the gas cap that you look at every time you fill up Premium recommended? This is really the first you see this?