You can get away with running pure leaded gas as long as you don’t have cats and every other tank, so you would need to run regular unleaded gas in between to clean out the O2 sensors,
VP does sells 109 unleaded, which is your best bet.
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Daily: G30 M550i, Bluestone, JB4, 1 step colder plugs, 6WB retrofit
Winter Beast: Audi S4 4.2L V8, Supercharger, brakes, suspension & exhaust mods
Wifes': F15 M50d clone, DUDMD tune, WMI, MPBK
Gone: E92 335i N54 468rwtq
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