I substituted MMO for Diesel Purge when I chose to clean my injectors. Sucked that stuff right up, and ran straight on it for about half-an-hour to consume the entire quart (I was operating the engine at random speeds).

Diesels idle like glass, and the power and fuel economy are phenomenal as they have been for 5K miles since.

It will shock you how quiet these 60x engines can really be. Almost have to put your ear down to the engine to hear it purr. Not sure about the 617.

Time to post another video.