I ran all summer, from June to September on B100 with no additives. The car ran great and other than 3 fuel filters, no problems. You would be amazed at the crap that #2 leaves in the fuel system (thus the 3 fuel filters).
My mileage was about the same, pickup seemed better, and a visible reduction in smoke, not to mention the exhaust smelled better.
The only reason I am not running it now is because my production area is unheated and I have not had the time to work on the area. I will start again in the spring, if not sooner.

BTW, the main reason I use Bio instead of WVO is that I have three vehicles and it's cheaper to make the Bio than convert all three to a heated system.

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87 300SDL - 215K Miles !!
99 F-350CC Dually PSD - 190K
86 300SDL - 189K
All on B-100