What motor oil do you suggest?

After Janurary 1, 2007 the diesel oil will lose the ZDDP additive package as well. The EPA made them go to a low-ash oil design for the ULSD (Ultra-low Sulfer Diesel) that is going to be in the pumps for '07. The new diesel engines have particulate filters and cats on the exhaust that will clog up without using the low-ash oil and ULSD mix. I have been using Brad Penn Racing oil in my Duster for about a year. Brad Penn is Kendall GT-1 renamed. Even has the green color to it yet.