Not nasty cheap oil, proper good stuff, check out Google, i've found people running all sorts of high performance cars on Exol oil. £59 for 20 litres of bike oil, or £18.99 for 5l, is an absolute baragain

http://stores.ebay.co.uk/lubetechoil...subZ1017263719

I ordered a 5l, it came next day, all seems good. Of course check out the spec is suitable for your bike etc etc