SPX- E85R is an unleaded racing fuel containing 85 volume % ethanol. It can only be used in fuel systems designed specifically for E Blend Fuel. Because it is highly oxygenated and requires increased fuel flow compared to conventional non-oxygenated fuels, best to consult with your fuel injection system or carburetor supplier for correct air/fuel ratio calibrations. SPX – E85R is blended to consistently contain 85% ethanol. Conventional E85 can vary from about 51% to 83% ethanol or so but rarely contains 85% ethanol. Conventional E85 can also vary seasonally; the composition of SPX E85R race fuel does not change. The non-ethanol portion of SPX – E85R is comprised of highly-refined race fuel hydrocarbons for stability and consistency. SPX – E85R is the racer’s fuel of choice where E85 fuels are allowed.

SPX – E85R does not contain metallic additives and will not harm oxygen sensors. It should be stored in dark, tightly sealed containers where the temperature is stable. Handled under such conditions, shelf life is in excess of 1 year. Check with your fuel system and fuel container manufacturers for compatibility with ethanol and E85 blends. Please note that due to the high oxygenation of E85R, the octane values are estimated.


Note: the octane ratings for E85R are estimates. The conventional ASTM laboratory octane tests cannot accommodate the high oxygen content of fuels like E85R.

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