Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Green velvet from my understanding is no longer in business... a local boiler builder has taken over supplying one grade of their oil (I believe one of the heavier/thicker oils)

Thanks for that info Nick, i didn't know they had ceased trading. 

I know the oil that Jensen and Wilesco supply is quite thin but they only supply it in small bottles but that is another option. I think 320 might be a suitable compromise.