Quote:
Originally Posted by timurrrr
As far as I understand, 0w-40 will still have lower viscosity at startup than 5w-30? I wonder why most people do 5w-30 and 0w-40 is rarely mentioned.
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Using a viscosity calculator and punching in the specs for Mobil1 5W-30 and 0W-40 shows they cross over around 0 degrees C. Basically, 0W-40 is going to be thicker at any temperature above freezing.