Hi, I'm new to the forum, and have a maybe crazy question to ask.

I'm thinking I'd love to start running my W108 on biodiesel...for a number of reasons I don't need to go into here. But of course it's a gasoline engine (244 K miles and still solid, gotta love that). Any hope of finding a turbo diesel engine from a later model Benz that'll fit into mine? And if so, any hope of getting somebody to do the work? Finally, what's a rebuilt engine going to cost?

Thanks