Let me add one additional reason. I have no biodiesel available near me that I'm aware of. When I go somewhere where I think B100 is available, I buy 15 gals or so and use it a couple of courts at a time mixed with PS as an additive.
Down to Earth Energy in Monroe has/had B20,B50, & B100, but that's about a 4 hr drive. And SA White Oil Company has/had "all blends" but that is also also 4 hrs too. Not sure if you knew about these locations or not.
United Energy Distributors in Aiken, SC has B20 if ever in that area.
Other than those I found these also:
Henry's Travel Plaza
Biodiesel (B20 and above)
1935 Old Edisto Dr
Orangeburg SC 29115
Biodiesel Blends: B20
Phone: 803-534-5808
Distance: 115.7 Miles
Access: Public - see hours
Kent's Korner #7
Biodiesel (B20 and above)
300 E Main St
Ridge Spring SC 29129
Biodiesel Blends: B20
Phone: 803-685-7880
Distance: 141.7 Miles
Access: Public - see hours
Kent's Korner #11 - Exxon
Biodiesel (B20 and above)
1012 Columbia Rd
Edgefield SC 29824
Biodiesel Blends: B20
Phone: 803-637-3435
Distance: 141.7 Miles
Access: Public - see hours
American Homegrown Fuel Corp - First Coast Biofuels
Biodiesel (B20 and above)
1170 W US Highway 90
Lake City FL 32055
Biodiesel Blends: B20
Phone: 386-754-2616
Distance: 141.8 Miles
Access: Public - see hours
Fillers #21 Shell - Davis Oil Co
Biodiesel (B20 and above)
2601 Moody Rd
Warner Robbins GA 31088
Biodiesel Blends: B20
Phone: 478-328-3755
Distance: 150.7 Miles
Access: Public - see hours
Davis Oil Co
Biodiesel (B20 and above)
US Highway 41 & Gunn Rd
Centerville GA 31028
Biodiesel Blends: B20
Phone: 800-277-4355
Distance: 156.4 Miles
Access: Public - see hours
Mini Food Stores - Marathon
Biodiesel (B20 and above)
3224 Vineville Ave
Macon GA 31206
Biodiesel Blends: B20
Phone: 478-742-2023
Distance: 160.8 Miles
Access: Public - see hours
WACO Fuel Plaza - Citgo
Biodiesel (B20 and above)
2717 S Bryon Butler Pkwy
Perry FL 32347
Biodiesel Blends: B20
Phone: 850-838-1852
Distance: 184.5 Miles
Access: Public - see hours