I'm a V8, carburetor kind of guy
But I wouldn't have any problems using algae-based fuel if I had a diesel, as long as their claims are true. If it's like the durned ethanol blends, where you lose a considerable amount of MPG, then I'd start to have a problem.
Here's a tip for all the alternative fuel people. We (the unwashed masses) don't mind new things, but we don't want to pay a premium for reduced performance.
Now, where's the cake?