Come Colder Weather The Mixing Of B100 With The Regular Diesel As 60% Of B 100 & 40% Of Petroleum #2 Diesel Is Something That I Was Doing Last Winter To Prevent Jelling. Did That For The 5 Months 0r So - No Problem Whatsoever. Than Switched To B 100 Straight For The Summer - Exhaust Smells Like The "french Fry". One Thing That Really Hurts Is The $ 3.27 Per Gal.{ Ouch} For The B 100. Although The $ 3.18 For The #2 Diesel Is Not To Far From That Either.