Durb wrote:
My state (Washington), and probably Oregon also, mandates a minimum of 2% biodiesel. They can add up to 5% of bio and still call it #2 diesel. No getting away from it.
Oregon mandates 5% bio. Many states mandate 2-5% bio diesel. I suspect you would be hard pressed to find many places with NO (0%) biodiesel,
Now biodiesel does have a slightly lower energy content. I say slightly since it is on the order of 1-2% lower. However bio has a higher Cetane rating, and better lubricity.
Personally I run B20 when I can find it, and in oregon B20 is exempt from state fuel tax so often costs less than B5
And on my 04.5 duramax I noticed that with B20 (yes I know they say don't use it in the 04) in cold weather less diesel rattle when cold or accelerating, likely from the higher cetane rating,
