There's nothing to resent. My comment simply related to the fact that someone who is specifically performance minded is going to go with the 300 over the 260. The person who chooses a 260 is likely to not be looking for transportation rather than performance. For this person, they will most likely not be driving a car the same as a person who wants as much power as they can get.

BTW, if you could get one of these engines to run on kerosene it still would not detonate. They have a knock sensor that sends its signal to the ignition control module that in turn retards timing to prevent detonation. These engines will indeed run on any octane, but because the system is retarding the timing, your fuel mileage will decrease. Whether or not this is a linear relationship between the cost of lower grade fuel and the fewer miles per gallon is hard to determine.

Now that the fuel prices have gone up, the percentage difference in cost between Premium in mid grade is less. I have rarely ever run mid grade just because I prefer maximum performance.

Have a great day,