[conehead]

I meant more that there is a problem with your sample data. One 0w that has half the viscosity of the others, and a 5w that has lower viscosity than a 0w, point to bad data. And that can lead to bad conclusions for a noob reading this thread. There will certainly be a range between brands, but nothing like those graphs show.


No 5w oil is going to have better cold start performance than a 0w oil even though they may be close.



I also wonder how they are going to start labeling oil once they push the cold viscosity below zero??? Negative viscosity hurts my brain.