Why Use an Ethanol-free Fuel?

As many classic car, bike, and boat owners have discovered, modern unleaded petrol is hygroscopic due to the mandatory inclusion of ethanol in all premium unleaded and most super unleaded forecourt fuels. The ethanol content, once around 5–7%, is now 10% in premium unleaded (hence the name E10). This presents a challenge for owners of older vehicles, as fuel systems built before 2002—or those not updated to cope with ethanol-blended fuels—are particularly vulnerable.

High levels of ethanol in petroleum fuel increase moisture levels, which promotes rust and corrosion in the fuel system. Carburettors and fuel lines are especially at risk, since ethanol itself is corrosive to aluminium, bronze, and zinc typically found in carburettors. These problems are worsened during long periods of non-use.

To address these issues, CFS Storage Plus and CFS Storage 5-Star have been specifically formulated to be kinder on gaskets, O-rings, and other fuel system components compared to standard unleaded petrol. Both contain detergent additives for engine cleanliness, as well as antioxidants and corrosion inhibitors to extend storage life. When stored in airtight, opaque fuel containers, each fuel should remain storage stable for 3–5 years.

• CFS Storage Plus: Burns extremely cleanly, with 99 RON and 92 MON, providing excellent protection from detonation.
  
• CFS Storage 5-Star: Burns extremely cleanly, with 103 RON and 98 MON, and includes a carefully calculated amount of TEL (lead) to protect vintage vehicles from valve seat recession and valve damage.
  

Both products ensure ethanol-free, storage-stable performance, giving classic and vintage vehicles the protection they need.