I need info on VW 502 00, 505 00, 503 01

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300
Location
toronto
some oils state that they meet VW 502 00, 505 00, 503 01 standards. what exactly are these VW specific standards? Where can I get more info on them? I own several VW of different age. I want to know if they all fall under same standard or not! Thanks in advance
 
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