Engine oil Shell or AMSOIL

With the AMS and a 20 row cooler my temps stick at 190-200 dependant on ambient temps thus far.

when i had my 2000 Jetta TDI I used Shell Rottela T full synthetic. 5-40 i think. blue bottle you can get at your local mega-lo mart good stuff and cheap check there web site.

Stick with the synthetic. The tiny turbos on the TDI's are heavily stressed and mineral oils are just not up to the task of protecting the bearings in the turbo.

amsoil here too, right now 5w30 going to switch to 0w30 soon, best stuff for the $$$

Amsoil 10-30 my dad's an amsoil dealer

Amsoil VW Approved European 5w40 is a great oil! Amsoil has a gurantee and no one esle can challenge that they are any better in quality or protection. Their oil was designed for long drain intervals and have superior protection.

Actually, I changed my 85 Jetta from Delo 400 15W40 dino to Rotella T Synthetic 5W40 at 275K miles. Yes, you can do it.

I just changed my oil with Rotella T 5W40 synthetic. It has the most recent CI-4+ rating on the bottle.

I use Amsoil Heavy Duty Diesel marine and truck oil.. it's preety good.. should be TDI friendly.

AMSOIL was my race sponser, and I've used their products in all of my racers including the SC'd 2000 4Motion. That being said, I wouldn't recommend running any engine oil ; including high-grade synthetics, over 7000 miles.