Tony
I see that you live in England. I Live in Australia. so my reccomendations may be different. I use Castrol 2T 2 stroke oil mixed at 25 parts to 1 or 200mls to 5 litres petrol. which is what Victa reccomends in Australia. (Instructions should be on the bottle) Another good 2 stroke oil is Mobil 2 stroke mixed at the same ratio as above. these oils may not be availible where you are, so I reccomend you ask at your local petrol station or Mower service & repair shop about what 2 stroke oils are availible. But it should be the same 25/1 mixing ratio
Hope this Helps.
Regards Ben
