Baz
Well-known member
In Canada the cost difference between regular and premium fuel is a lot higher than in the United States. I’ve run 87 octane to 94 octane fuel in my 6.2 and have noticed the same as what BRT stated earlier. I find the 6.2 to be a fairly loud motor with all the clicks and clacks it makes, but I’m told that’s the nature of the beast. It seems to run a bit smoother and get better gas mileage when I run the premium gas.