Thanks for bringing this to our attention..You can pay up to £16 (if you are stupid or on expenses) at a BP garage for this oil.

My A4 2.0 TDI needs about 1.5 litres between services so roughly 10000 mile per litre which can't be grumbled about really. When it was brand new I used a litre in the first 2000 miles, but it settled right down aftre this.

My theory is that most of the oil goes through the turbo.

The handbook for my 05 Golf 1.9TDi 105 specifies oil spec VW 506.01 for vehicles on long-life servicing, and VW505.01 if on normal time/distance interval. This also applies to the 140bhp engine.

There is a service booklet addendum which states for the 140bhp with a DPF, VW507 must be used (no distinction made between longlife and normal servicing).

Presumably to avoid variant of oil proliferation, VW &/or the oil companies seem to have standardised on VW507 and dropped VW506.

If your Touran does not have a DPF and is not on longlife servicing, double check in your handbook to see if you could consider using the cheaper VW505.01.

I would generally agree with the above comments, although it's worth pointing out that 505.01 oil is generally semi-synthetic wheras 507.00 is fully synth. I am not keen on the use of anything other than fully synthetic oils in turbocharged diesels due to the tendency of lesser oils to form varnish deposits on the shafts.

Much of this can be due to "heat soak" if an engine is not reasonably cooled prior to switching off, but testing I have done in the past (of a general nature on several engines, mostly rather larger than the PD) would suggest that synthetic oils do not form these deposits, even under abusive conditions.

As I tow with my AWX, I use 507.00, but under light general use, I'm confident 505.01 would be OK with care. 10k intervals is pushing it for a semi-synth - unless your operating conditions are very favourable. I change at 7k.

PD engines seem to vary a lot as far as oil consumption goes. Mine, like yours does not require oil between 7k changes and goes from the top bend to the centre of the hatched portion of the stick. It's very important not to overfill these engines as any excessive oil-laden blowby will coke the EGR valve. (The worst engines show visible external oil leakage at this point). The best engines seem to be those which are thrashed when young, then carefully and considerately treated with reasonable oil change intervals. Any comments from others?

The documentation is a Teutonic thing. They just couldn't imagine anyone getting it wrong - so no info in the engine.... Numpties.

659.