My experience with B20 has been variable. First time there was a noticable power loss, excessive nailing, and a disappointing 22 MPG (Imperial). Ran regular Diesel for several weeks after, waithing for weather to warm up. Then I tried again, and delighted that I went from 25 MPG on dino to 28 with the B20. After several fills of B20, mileage has maintained around 26 to 28, with good power, quieter operation, but still some nailing when cold. I was suspicious after first try with the only BioDiesel station around here having the pumps located on the same pad as their car wash. But subsequent experience, especially with somewhat warmer temperatures has been very promising.

Dave

1976 White 300D W115 "Pearl"
1970 Euro 200 parts car "Earl"