Quote:
Originally Posted by Scharbag
Perhaps there is a benefit at a hot racetrack to run 10w60 but if that were the case, why does the Porsche GT3 come with a 0w40 factory fill?
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Because it was designed around that oil, much like the S65 was designed around 10w60.
There is still an element of marketing behind it...the divorce of BMW and Castrol was a huge deal.