[2rowdy]

I have the fs-2500 and the oil is black as coal. My uao comes back great. The next time I send in a sample I will have 15000 miles on oil. 3% fuel was the most I ever had so I changed it. I can't remember what dodge says is acceptable.

 

[2rowdy]

Bypass filtration is nothing new under the sun. Many many people, myself included, run a bypass filtration system and get good UOA back. It is a proven fact that when you demand a better oil and couple it with better filtration, you get better results and save money and downtime.

-Chuck

I agree completely with duluth diesel. Just do research and see what fits you.

P.S. Just so everyone doesn't scream I am flying the amsoil banner. I don't use the products. Not bashing just stating.