Engine oil AMSOIL or PETRONAS

i used their oil before and was very happy.

I use Amsoil full synthetic 15w-40 year round in my 1.6D with over 250k miles.

Amsoil 20w50 in my 8-v 12:1+ 1.8 liter Rabbit Amsoil 5w-40 in my street turbo Jetta and track turbo Golf.

I switched to amsoil 20w50 and the temps are down to 230ish

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

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.

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