Premium Fuel?
In my area we have regular fuel 87 octane with ethyenol and premium 92 octane without ethyenol. My truck (2007 Chevy 2500HD 6.0L) does not NEED prem. fuel. Is there any issues running prem. fuel? I kn...
Forum Discussion
My truck requires 92 or better octane. We have a station in town that sells pure premium for a very premium price. Interestingly, I've notice a severe drop in mileage when running that real premium. I've switched back to the 10% ethanol stuff.
