I used Valvoline 20/50 racing oil, pleased with it, got added zinc etc. MMC use Morris V twin oil which my local factor can only supply me if I buy a pack of 4 x 5 litres. Not many M3W’s around here so understandable. Whilst at the Factory they sold me 5 litres from their bulk tank, whilst the cost was reasonable they charged £10.00 for the tin! albeit one of those fancy vintage ones from their shop....
