New Models?

At this point in time, I don't think any manufacturers are concentrating on biodiesel compatabiliy.... One of the big concerns is the quality of "home brew".

What IS occupying R&D are the new requirements for lower sulfur (sulphur?... I can't ever get that right) content fuels. Sulphur (sulfur?... I can't ever get that right) aided in the lubricity of diesel fuel... a major characteristic considering injection pressures.

I can't speak for any offshore offerings but in North America, despite what the rumour mill has to say about the 6.4 diesel, I feel it safe to say that we will no longer see the HEUI injector. Common rail injection is where all manufacturers seem to be heading. I can't be sure if this will make the systems more forgiving of biodiesel or if it will have the opposite effect (let's remember that we are talking fuel pressure well over 20,000 PSI).

Currently, Fords engineers will not recommend anything above B5 fuel.

Any modern diesel engine will run fine on high quality biodiesel or biodiesel blends.

The real question might be when the automakers and regulators are going to get on the stick and provide quality diesel automobiles in volume in the US as is done for Europe. Diesels can deliver the fuel economy of hybrids without the extra weight, cost and complexity of a hybrid powertrain.

John

Pure opinion on my part but, I think the reason for this is the US perception of diesel engines brought about by the failed Oldsmibile 5.7 diesel and others. This coupled by the need for more responsible preventive maintenence will hamper acceptance of diesels by the US public. I once had a Ford Tempo diesel and felt it was a good car in spite of a few quirks. The fuel mileage was great, it had acceptable power, etc. Far more people had bad experiences with early US diesel powered cars, and thus the reputation is tainted.