The R E85 racing is especially formulated to be 100% consistent and resistant to detonation. It does not contain any Sulphur, Benzene or Aromatics as we do not blend the Ethanol with normal petrol. The ethanol content is always at 85% and the petrol content is petroleum alkylate based ensuring maximum quality and consistency. To increase lubrication and reduce corrosiveness a synthetic top lube have been added.
Can not be compared to inconsistent E85 sourced from normal petrol stations. Ethanol part of the E85 is made from sustainable sugarbeat plants in Europe.