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Oh? That is interesting.. So the mobil 10w-40 has a higher high-shear viscosity? I can see running that in the summer but in the winter I
think I would want a 5w or 0w ?....There is no 5w-40 common where I am
except the Castrol Syntec. Still very interesting that the 0w-40 is
on the low end of the GM spec that we're told we need. The Mobil 10w-40 doesn't even list the GM spec.
posted by 170.146....
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