I filled up with bio-diesel this weekend at the co-op like I usually do and I noticed they had an ULSD sticker on the pump. Does this mean that the bio-diesel has to have <15 ppm also ?? If this is the case, will the biodiesel (even though it has almost no sulfur in it), still have better lubricity than regular #2 ULSD ? With the new ULSD, I just want to make sure the biodiesel is still better on lubricity if it is also ULSD. Needing to find out if I need to be adding something to the fuel or not for lube.

Thanks

 

5% bio with ULSD (B5) lubes better then LSD. Hope that answers your question.

 

Thanks Crabjoe, that is what I was wondering.