b5
hello
I have run b5 in my 05 I think its a waste of bio to mix it that thin, yes you get good lube out of it but thats about it .
Think b50 is a good spot to start if not higher .
Cummins wants you to use b5 in the 06 but I heard b20 in the 07's
but there a people on this site running b100 with no problems.
just my thoughts
cj hall