Measuring it out most of the time
But not that difficult filling it up with 50/50 at times
I document my fills and calculate how much I need to blend
Love this stuff
[quote=benzy89;12318830]How are you mixing? Just filling up 1/2 way with 91 + the other 1/2 with E85? Or are you actually measuring it out to make sure you have a consistent 50:50 blend?