Diff cover science videos

[H_Nunez]

Hi,
I found these couple of videos explaining the science behind the shape of the diff cover. What are your thoughts?

HN

 

[Head Lice]

Factory diff cover does the job . . . .
If you want to be 'unique' . . . . paint a 'happy face' on yours.

 

[Tob]

If you want to be 'unique'

Another tried-and-true method is using italicized and odd-colored font

 

[Mrholland]

I like mine with hugs and kisses!

 

[Head Lice]

Another tried-and-true method is using italicized and odd-colored font

What is font ?

 

[Tob]

What is font ?

https://www.google.com/search?sxsrf...MqFEAMA7_QXqzcAAAA&zx=1609635667034#dobs=font