How do you calculate how much bio you are running as a ratio. For instance if you have 30 gallons of ULSD and mix in 1 gallon of B100, what is that blend, B5? Thanks in advance.

Maybe I am just over thinking this. If I took 10 gallons of B100 and mixed it with 20 gallons of ULSD, that would be B30, right?

Maybe I am just over thinking this. If I took 10 gallons of B100 and mixed it with 20 gallons of ULSD, that would be B30, right?
That would be B33.3

30 gal usld + 1 gal B100 = B3.22

Take your amount of B100 and divide by the total amount of diesel will equal your percentage.

B100 / (B100 + ULSD) = %