Here is a 67 page and counting debate about using 2 stroke oil to lubricate your injection system: http://www.cumminsforum.com/forum/alternative-fuels-additives-oils-lubricants-sponsored-holland-court-sales/4054-first-time-w-2stroke-oil.html

It's mainly about protecting onld cummins engines from ULSD effects on the injection pump over long term. I don't know if it's the same for old MB diesels but the general consensul there is that this could be beneficial to older Diesels.