My brother used to take a truck gently up against a telephone pole and release the clutch to see if it slips or truck dies...and sometimes hear a motor knock too.

Here in the wild west you'd get lynched for that..
Folks like your brother are why nobody drives my vehicles until after their money is in my pocket.
I put a $14,000.00 drivetrain into a $300 pickup. It's in the eye of the beholder.
Awesome... Pictures make it real for the rest of us
