I use this filter as a larger alternative to the OE sized filter on my 2006 Jeep Liberty CRD(diesel). It adds about a half quart of extra oil capacity over the stock unit which can't hurt. I see pretty positive reviews of the Fram Ultra line on Bob is the Oil Guy so it has to be somewhat decent. The tremendous amount of soot that ends up in the oil of my jeep is not good so having that better filtration and extra oil capacity helps a bit.