Is anyone running straight B100 for fuel. I have a 04 Power stroke I notice when I first fire off in the mornin that it fires slowly should I mix petro diesel with it to thin

no. the engine is cold and the glow plugs are set for biodiesel.

my bus starts just fine in the morning without diesel. but when it gets really cold, say less than 20F, it doesn't to start at all. even before I started using BD..I don't have glow plugs.

so you might just want to crank a little longer

-dkenny