Have you put some petrol and 'Bean Oil' in a glass jar, shaken it up then left it for a while to see what happens? I used to race a TV 200 with a GP200 engine (home-tuned cast iron barrel) in the cutdown class and the engine ran brilliantly. To this end it has established advanced technology centers operating in the UK as well as in the US, Germany, Japan, India and China.

It also had a tendency to settled out in the petrol tank if I left it for any length of time, so I switched back to normal 2 stroke oil.Nostalgia's great in its place but give me microscopic magnetic particles keeping metal bits apart as they pass each other at ludicrous speed any day. In the 1920s castor oil was removed from general motoring oils as mineral oil technology advanced, but its superior film strength ensured it a continued role in high performance engines. per tankful) marine 2 stroke oil to the gas in my bikes for some time now, and I am not alone I'm sure.

We don’t really recommend it for use in modern machinery because there are more suitable modern oils available such as Castrol Power 1 Racing 10W-40 and Castrol Power 1 GPS 10W-40. Following which, on land and in the air, the litany of Castrol successes encompasses many of the most significant events in aviation and motoring history, including Britain’s winning of the Schneider Trophy three times in a row with the R J Mitchell designed, Rolls-Royce powered Supermarine S5, and most of the World Land Speed Records established during the highly competitive inter-war years. Next year I'll strip her down again to see what condition the engine components are in after having run her exclusively on R30/40.

Aways ran 80-1 on 747 and never a problem with the trials bikes and imo it is the best 2T oil you can use.

Hope the pic ain't too small to see but this is the extent of carbon build up after running the engine for years on a mixture of Castrol R40, plain modern mineral, part-synth, fully-synth, and sometimes a mixture of one, or more than one other of the aforementioned. i used to be right behind the barrier on the second bend with my perspex board so i could still see them when the grit hit me oh them days OH that smell . With over 115 years of experience in providing top quality products, Castrol is today the world's largest specialist in lubricants, process fluids and maintenance fluids. I can't think of anything bad that could come of it to be honest since we're talking very small percentages here. In WW1 they pumped castor oil into the fuel to help lubricate the motor since it does not mix with gasoline and they needed the extra lubrication.A quick peek in the OED reveals all manner of definitions for shit, so its usage has morphed beyond the simply scatalogical. We have found this in oldish engines when stripped, after only ever being run on it that the bore etc looks perfect!