My wagon is due for a service in a few weeks and also coming out of warranty. Dealer warranty based services will now be scaled down to owner based services, i.e, I get my own stuff to service the Treg. I've been searching for engine oils and am aware that Penrite produce Enviro Plus 5W-30 that looks to be the goods with VW approval for diesel donks with DPF fitted. Anyone here used this oil yet? I'm more than happy to use Penrite in any vehicle.

Oil info here:
ENVIRO PLUS 5W30 - Penrite Oil

I'm sure you can get in in 20ltr containers.