There are negatives (I know it is true for the Audis, but not sure about brands)......
The lack of fuel flowing over the intake valves can lead to dirt build up on the valves. Mosr fuels have cleaning additives that clean the intake valves.
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Autobahn Country Club (North and South Tracks), Blackhawk Farms, Grattan, Gingerman, Mid-Ohio, Putnam Park, Road America, Sears Point, Thunderhill, VIR and "The Ring"
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