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
Ethanol will lower your mileage. if you run pure gas (the 92 you say is pure gas) it will be better for your engine. it will run much more efficiently. my truck had a very hard time with the 87 and 10% ethanol. at times, depending on terrain and wind, it would barley hold 55mph and get 5mpg doing it. I started using 92,93 octane and power and mileage came back. if it is available I would use straight gas and save the corn for the campfire!
