[Vwdiesel] early oil change 09 Jetta

Kurt Nolte syncronized_turbo at yahoo.co.uk
Wed Oct 29 01:34:32 PDT 2008

The PDs needed specific oils because of the pressures on the cam lobes 
from the unit injectors and because of the narrower valve lobes to be 
able to squeeze four more cam lobes onto the same shaft.

2009 TDIs are common rail, however, and so don't suffer from the same 
lobe stresses, but the VW specification oil is formulated for the 
tolerances of the engine and for the health of the DPF. As I understand 
it, typical diesel oils would contribute trace elements and ash that 
would quickly (relatively speaking) block and poison the particulate 
filter and the De-NOx  and sulfur catalysts.


LBaird119 at aol.com wrote:
> In a message dated 10/28/2008 1:26:23 PM Pacific Daylight Time, 
> matt_lisa at sprynet.com writes:
>> The most important part with the '09 is to change the oil with the 
>> recommended VW oil.  It uses a very specific formulation, and if you don't use that 
>> it's bad.  I'm not sure why, but it is. ;-)
>   Has to do with the high pressure from the PD/unit injectors or 
> such doesn't it?
>     Loren
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