The CFS Formula 105 was formulated to mirror the types of race fuels that was used in the 50s, 60s and 70s. It has a high octane value of 105RON, a lead content to protect valve seats and is completely ethanol free to ensure that the fuel system is safe and sound for a long period of time. Available in 25 and 200 litre drums. We ship all over the UK on a 2-business day basis.