FU3L R5 is a legendary 102 RON competition racing fuel that contains 15 % sustainable components with uncompromising performance.
Meeting FIA Appendix J standards, it offers crisp detonation control, smooth power curves, and repeatable lap-to-lap stability. Ethanol free and formulated for consistency, R5 empowers both rally and circuit engines to reach peak potential.
When reliability and raw performance matter most, R5 delivers.
RACE TO WIN, ACCELERATE CHANGE
Up to 78% CO2 reduction
Prolonged shelf life
FIA Appendix J
THE IMPORTANT STUFF
RON
101.5–102.0
(Research Octane Number) Resistance to knocking under low-load, lower temperature conditions.
ETHANOL
<0%
Ethanol fraction; oxygenate, renewable, improves octane.
A/F RATIO (STOICH) KG
13.68–13.71
Air-to-fuel ratio for complete combustion; key for engine calibration.
OXYGENATES
3.5–3.7
Compounds that contain oxygen and are added to gasoline to improve combustion efficiency and reduce harmful emissions.
784-785
DENSITY AT 15C
Mass per unit volume; affects energy content per litre and fuel metering.