The majority of professional motorsports, with the exception of some fuel classes, have been unleaded for quite some time.
Getting rid of leaded fuels isnt a bad thing... as the formulation of mixed fuels have come a long way in the past 10 or so years. Unless you are running 25+ pounds of boost... you actual motor octane numbers dont require lead and the other reasons for a leaded additive are falling to the wayside as well.
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