Originally Posted by christian.hess
oh sorry thought that it was about 2 stroke engines...
No, you're still missing my point....2 stroke gas engines have to have oil added to the fuel for combustion either by adding oil to the gas in the tank or having oil injected into the the fuel from a separate tank.
With 2 stroke diesel engines, oil does not have to be added to the fuel for combustion. There's enough lubricity in diesel fuel that additional oil is not needed.