Unimog Club UK

It's not garunteed but it's good practice when you put fuel in your Unimog put a litre of two stroke in the tank before filling up, make sure it's mineral, I don't know anything about the fuel where you live but we have low sulphere and bio diesel blended both of which did not exist when these engines were launched ! The two stroke oil will help the pump with lubrication.
Moose - See more at: http://www.unimog.club/show-off-your-kit/my-mog-619/15/#sthash.8RbHYdtp.dpuf

Sorry I didn't understand what u meant by "stroke". What kind of oil is that? Is it the engine oil that we use?