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      08-24-2011, 01:47 PM   #15
grimlock
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Drives: F10 N52B30@255PS
Join Date: Sep 2010
Location: Hong Kong

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Does the 5w30 flow better at start up than 0w40?
I choose the '0' because supposedly its thinnest at ambient temp, compared to a comparable '5' .. i wonder if the translation is direct or something is lost, different in reality.
So '30' is heavy enough for HK temps? At operating temp its approx 11 viscosity vs. 13-14 for a '40' .. actually the differences are so small, one extra cold start per year is probably worse than then difference between one grade of oil..or is it?
Supposedly mobil 0w40 is a 'thin' 40 weight, which thins rapidly .. but not like there is much choice, if u don't leave '0' or '40' ..
The mobil 0w40 is costing 850-900 per change just for the oil.. silly considering its half the price elsewhere,
I'm tempted to go buy a bottle of the 5w30 bmw stuff u got for 70/bottle .. and compare it to the 0w40 in the fridge at -16C
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