I found a new place that just open to the public to fill up on B99 biodiesel. The price for biodiesel today is $4.05/g which is less than 30 cents/g for diesel in the cheapest gas station locally. It is located at 851 49th Avenue, Oakland (just off San Leandro Blvd). Drive into the parking lot (if the gate is close, go to the office and somebody will open for you), and park your car/truck next to the dispensing tranker truck. Somebody from the office will come out and fill your tank. I recently filled up my tank plus four 5-gallon containers. The engine now purrs and it smokes so much less. This is a big operation and they are supplying biodiesel to schools and large companies. I'm so glad they are now open to the public. Remember this is not a "station" - you are dispensed biodiesel directly from a metered tanker with a pump. The biodiesel is made onsite and it's good stuff (surpass ASTM). Check their website included in the link:
http://www.insidebayarea.com/top-stories/ci_17909660
Note: I am not associated with this company in any capacity.