Also, if it's something you want to get into. You can brew your own biodiesel in your garage.
Companies out of the States sell the kits, and supposedly get your fuel cost down to US$1/Gallon. As opposed to the $US4-5 it is now.
Winter time requires a fuel additive to keep the diesel from gelling. And plug it in colder than -10.
Plus your performance mods are more plentiful and more noticeable. Intake, exhaust, injectors, tuner, water/meth injection, bigger turbos, more fuel, yadda, yadda.
From what I recall, the 3.0L Common Rail does have an intake and exhaust kit available, and I think someone makes a tuner for it too. You'll never get to 500+ horse like the pickup trucks can get, but every little bit counts, and the bonus, at highway speeds is when its most efficient.
Now only if it came with a stick, like it does in Europe...