It certainly does apply to diesel oils. '06 1.9 TDI you say? That means that it's a PD engine. You need to use oil to VAG spec 505.01 if the car's on the standard 10K mile service interval, or to 506.01 if it's on the variable "long life" service interval. Don't be tempted to use anything other than the correct spec oil. The "Pumpe Deuse" injector pumps on the PD engines are driven off a separate lobe on the camshaft. They inject diesel at 2050 bar, that's 29,730 psi and place a huge loading on the nose of the cam lobe. The correct VAG spec oil is formulated to maintain an adequate film strength under those conditions.
This is the layman's version.....
www.honestjohn.co.uk/forum/post/index.htm?t=15877&v=f
Thanks for that, most appreciated.
This is the thing, its been on a "variable long life service" schedule from brand new, but at 1 year old and 12K (I've just taken ownership at this stage), it still doesn't need/hasn't had a service. According to VW, the cars computer will alert the owner when it does, upto 2 years and 20k from new. I don't want to leave the same oil in there for that long, I can't see how it will do the car any good. My plan was to change the oil/filter myself now, and then in a years time get it done by VW as the maximum 2 years will be up. If, as they are implying, the car "checks" the oil condition, it will see brand new oil and not indicate it needs servicing, so it will go the full 2 years before being done, if that makes sense? It will save me money as VW will only have to service it every 2 years, and I'll have piece of mind by changing the oil more often.
The salesman aslo seemed to suggest that the oil was the same wether you opt for "long life servicing" or annual servicing. He said if you do long journeys, lots of motorway miles etc they set the cars service indicator for long life (upto 2 years, 20K). If you're planning on doing short, frequent journeys, high engine loads (trailering etc) then they set it for 1 year/10K). When the car goes back to VW for servicing they then reset the service indicator again, to which one you choose depending on your driving style.
Perhaps I was missinformed, as you've now quoted two differnet spec oils, rather than the generic 1 which I was led to believe existed.
Thanks again, if you have any other info on this engine it would be most appreciated

Cheers :burnout: