One big thing thing I've noticed right off the bat was no more smoke and was able to run 100% wmo once the oil in the tank was hot (i have pex pipe coiled up in the tank to heat the wmo that's hooked up to the heater line) I don't have any pics, but there fatty wagons. I think their web site is
Fattywagons home or goggle fattywagon and that will take you to it. Got mine off ebay. I've been reluctant to try it on a 6.2 being most attempts to run wmo/wvo haven't been to successful.
Dual tanks system?
I think there is a good chance of the 6.2 running alt fuels. High compression+idi Ricardo style pre cups are all a good base.I think the biggest problem(or mine) is the carbon.
Over on dieselplace there are a few people working on running 100%wmo. Best idea i have seen yet is to modifiy the injector tips.
I am working to grind down the tip of a injector to the nozzle. This eliminates the cup and spacer where carbon like to stick. I need to get a pop tester and start spraying fuels to see how oil sprays through injectors. My second hand information is that low pop pressure is not good with oil.
No matter what, i think a dual tank system will always be a good idea. For idling/start up and around town i think that diesel is better. Once under way at speed/egts the oil burns much better.
And please remember everything i have said is just what i have learned so far. It might not be right, but it is what knowledge i have gained to this point. Still have a ways to go.