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Originally Posted by bmwm750
So Jim, between the 0W40 and the 5W40 which is the better lubricant? I like the idea of a "0" weight at startup, but I have to wonder what was done to the oil to make it flow so well when cold and still behave like a 40 weight when hot....
Patrick
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Hi,
Porsche recommends 0-40.
But, it's not a 0 weight at startup. It's a multi-viscosity Oil which, through the addition of Long Chain Polymers
behaves like a 0 weight Oil at 32°F, that's not the same thing.
The first # in a Multiviscosity Oil is the
Winter weight (at 32°). Only under this condition does the Oil behave like this. For a West Coast Car, or one which is stored through the winter, this # is relatively useless..
Happy Motoring!... Jim'99