Quote:
Originally Posted by BenArcher
I think you may have some facts crossed. 5w-30 is only thicker when cold, it is thinner than 0W-40 at operating temperature. As such 5w-30 does not minimize leaks, instead it offers improvements to fuel consumption/power. Whilst 0W-40 provides better flow at start up and better engine protection at operating temp.
Really though outside of a lab you would struggle to tell the difference.
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To make sure no misinformation is spread by myself
- 0w-40 flows like
0 grade when
cold and
40 grade at
operating temperature.
- 5w-30 flows like
5 grade when
cold and
30 grade at
operating temperature.
So the "
just use thicker oil to prevent leaks" is a myth?