Frequently Asked Questions

WHAT DOES CLASSIC CLASSIC CAR FUEL CONTAIN?

Classic Classic Car Fuel is a ready to use, ethanol-free super unleaded petrol containing a bespoke fuel additive formulation for classic cars and motorbikes that were originally designed to run on leaded fuel. It is a superior lead replacement petrol (LRP).

WHY IS SULPHUR REDUCED IN TODAY’S FUELS?

The sulphur content of all fuels has been gradually reduced over many years in order to reduce harmful vehicle emissions and to protect exhaust treatment equipment (exhaust catalysts).

WHY HAS LEAD BEEN REMOVED FROM FUELS?

Lead was originally used in petrol as a low-cost high octane component which also acted to protect valve sets. It was eliminated in most markets for health concerns. As lead was progressively removed, engine manufacturers started to produce cylinder heads with hardened valve seats.

HOW DOES ETHANOL IN FUEL AFFECT MY VEHICLE PARTS?

The use and impact of ethanol in petrol is complicated. It can increase the octane number and result in lower vehicle emissions, notably carbon monoxide. But it can also degrade ‘drive ability’ and increase fuel consumption. The quality of the added ethanol is also critical and pH control is important if metallic corrosion and the degradation of some plastics and elastomers is to be avoided.

WHAT IMPROVEMENTS WILL I SEE WITH THE CLASSIC CLASSIC CAR FUEL?

Valve seat recession will be inhibited and the octane number will match that of forecourt grade super unleaded petrol. Octane is a measure of petrol’s resistance to ‘pinking’ – this is caused by the fuel/air mixture igniting under compression independently of the spark plug. The fuel will reduce the ‘pinking’ tendency of regular petrol, especially when used in engines with high compression ratios. The elimination of ethanol – routinely present in the majority of retail petrol – prevents many of the detrimental side issues affecting classic vehicles.

WHY IS ETHANOL REMOVED FROM CLASSIC CLASSIC FUEL?

Over time ethanol absorbs moisture from air and from the fuel supply chain. It can separate and drop to the bottom of the fuel tank with the ethanol. The impact of this is that corrosion can occur causing damage to the fuel system. Petrol containing ethanol also shows reduced ‘drive ability’ and increased fuel consumption. Classic Oil wants to be able to provide its customers with a petrol that brings worry free ownership of classic cars and motorbikes.

WILL THIS CLASSIC CLASSIC FUEL IMPROVE THE DRIVE ABILITY OF MY CLASSIC CAR?

This Classic Car Fuel does contain a small octane boost so the drive ability will be enhanced and will guard against ‘pinking’.

CAN I LEAVE THIS CLASSIC CLASSIC FUEL IN MY CAR OR MOTORBIKE WITHOUT LACQUERS/GUMS FORMING?

The ethanol free fuel will help to reduce the lacquers/gums from forming and corrosive damage resulting from the ethanol content. The ideal shelf life for fuel is 2 years but it is recommended that the vehicle is turned over and run regularly for obvious reasons.

I’M EXPERIENCING EXCESSIVE SPARK PLUG DEPOSITS, WHAT IS CAUSING THIS?

Classic Car Fuel is formulated to provide a controlled octane boost. However, if additional aftermarket octane boosting products are used, depending on the brand and the chemistry used, these can cause excessive spark plug deposits and/or reduce elastomer (e.g. seals and hose) life. We recommend that customers do not ‘top treat’ with aftermarket octane boosters.