Viscosity life

[SpitFire6]

Thinner oil will be picked up and pumped around by the engine easier than heavier oil in cold weather. And yes pouring frozen oils down a slide do show which oil flow easier compared to each other. How is that a bad test?

Pouring oil down a slide does no compare to an engine's oil pump. The pump is Positive Displacement. The "Thick" oil would require more Hp to rotate At the same displacement.
Beakers with a DP pump would fill in the same time.

 

[ka9mnx]

PF videos are purely for entertainment purposes only and he states that on his channel.

 

[MolaKule]

Let's please stick to the technical aspects of viscosity as this is not a Forum in which to critique youtube videos.

 

[ZeeOSix]

Besides the oil being force fed through the system by the PD pump, oil that is splashed, flinging or draining by gravity does "flow better" than a thicker oil when cold. But still, stick with the recommend "W" rating by the vehicle manufacturer and all will be well. In other words, don't use a 20W-50 in -25F climates.