yes I know this..................an improperly engine that is locked up wont need any BTU's is my piont

get the lubricity there and then add some methanol to up the BTU content eh

Yep, I've been there done that 3 times but it wasnt from lack of lubricity. Well, it wasnt up to the point that a window was installed on the right cylinder bank of the block. :pca1:

Even running straight #2 diesel provides enough lubricity for the engine and fuel system. Using an additive is even better.

you didnt see this?????????????????

ULSD HFRR=636

Engine manufacture recommendations HFRR <460

Thats "Untreated". Yes, the refineries do add a lube package to ULSD. Its not very good but its better than nothing.

dont ever count on the refineries doing the additive package .....................it dont happen more than it does I know I worked for Flying J for a couple years

What kind of fuel are you running?

IIRC the older engines need to have a HFRR of around 300-325 like our old LSD had. Also I recall that the ULSD HFRR=636 is before lube is added to ULSD.

Here is what Cummins wants as of Oct 31, 2007 for diesel fuel and I assume it for the new 6.7L engine, its a good read I think anyway. http://www.maitlandelectric.com/truck/fuel.html

Whit is right though. Some batches they add the package and some they dont. Its hit and miss as to whether you get a tank of ULSD that's been treated or not and the only way to know is to have an analysis done. I've actually considered doing it for about 5 tanks just to see how much difference there is between batches.

#2 ULSD with Stanadyne

Just regular pump fuel or do you buy it from a certain place?