been running b99 for the summer no trouble. This am 32 degrees and no start. Pulled fuel filter added regular diesel purged air from the system and put 10 gal of regular diesel from the bobcat into the tank to make a 50 50 blend. I've cranked it enough times to get some white smoke out of the tail pipe but it wont stay running. Feathered the gas pump to keep it running for about 1 minute. I've had it plugged in for 6 hours now and the fuel feels warm in the filter. Have I drained the batteries to the point where the crank speed just isn't enough? or is there a chance I burned out the fuel pump with the more viscous fuel?