i know this is really a stupid question but i got to know i just bought a 6.0 and i put some biodiesel in it the other day and now im seeing a blueish smoke when the is motor cold but go away when warm. also the motor is slow cranking any ideas thanks.

 

blue usually= burning oil. the guys on here are going to want a full list of mods/upgrades etc. maybe describe this biodiesel???? you make it yourself etc