http://www.drive.com.au/recommended-oil/Audi/A6/pg1/@spg702/results.htmlSo 5w-50 is the best, right?

Q:

A: 5w-50 is more viscous at higher temperatures compared to 5w-40. So if you do a lot of long highways driving go with the 50 where as if you doing shorter around town drives go with the 40.

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