**I did this write up a few years ago for the Mk4 forum. It has not been updated since 2005. Please use this as a guide, but keep in mind that some oils may have been added or removed from this list since it was made.**
All You Ever Wanted to Know about VW Approved Oil, and more!
To make a long story short, VW Auto Group (specifically VW and Audi) maintain an oil standard of approved oils which are acceptable for use in their engines.
This compliation of approved oils is to help you choose an oil which will both suit your needs, and confirm to the VW oil standard.
Currently, there are two standards which you should be concerned about, the 502.00 and the 505.01 standards.
If your car was made between 1998 and 2004, your car requires 502.00 oil. For a list of approved 502.00 oils, click here.
If you car was made after 2004, your car requires 505.01 oil. For a list of approved 505.01 oils, click here.
The 505.01 oil standard is the most recent - released July 2005.
If you are confused about which oil you should choose, I suggest reading the PDF version of VW's Choosing the Right Oil—gasoline engines brocure, which is available here.
**Regarding TDI Engines**
Quote, originally posted by tjl » TDI diesel engines in the US, use:
1996-2003: 5W-40 or 5W-30 synthetic with any of VW 505.00, ACEA B3 or B4, or API CF-4, CG-4, CH-4, or CI-4
2004-2005: VW 505.01 rated oil only
Note: VW 505.01 rated oils also meet VW 505.00 (though typically not VW 502.00). Most(?) VW 502.00 rated oils also meet VW 505.00 but not VW 505.01.
disclaimer: all information in the thread was obtained from VAG as puplic domain information. If, after reading this thread, you are still unsure of what oil to use, please consult a VW Technician. That is all.
sources: 1, 2
Modified by bhb399mm at 2:09 PM 6-19-2008