CLASSIC VALVEMASTER

For those of your running older bikes, Valvemaster, with its unique phosphorus formula, protects against valve seat recession under all driving conditions.

It contains Etha-Guard, an ethanol stabiliser, that protects and enables use of ethanol E5 and E10 petrol in classic cars, motorcycles and pre-1996 petrol vehicles, and is safe for use with 95, 97, 98, 99, or higher octane ethanol E5 and E10 petrol.

One 250ml bottle of Valvemaster treats 250 litres of fuel, and its costs just £14.35 from Wemoto.com