Okay, I finally found a shop in my local area that specializes in VW and Audi automobiles. While talking with the owner about various things I have learned since joining this forum ... I asked him what kind of oil he used in the TDI's he serviced.
He went on about how oils used to have something called ZDDP (Zink Phosphate) but the EPA required it to be removed and VW had to come up with a "substitute" oil which would meet the 505.01 standards.
He said Shell Rotella-T Synthetic (5W-40) could be safely used in my 2005 Passat TDI with no cam related problems due to oil. This is because Rotella-T has the ZDDP which was removed by other oil manufacturers.
Is this true or is he just blowing smoke?
He went on about how oils used to have something called ZDDP (Zink Phosphate) but the EPA required it to be removed and VW had to come up with a "substitute" oil which would meet the 505.01 standards.
He said Shell Rotella-T Synthetic (5W-40) could be safely used in my 2005 Passat TDI with no cam related problems due to oil. This is because Rotella-T has the ZDDP which was removed by other oil manufacturers.
Is this true or is he just blowing smoke?
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