hmm - irrelevant words.... in your world is a bobbin called a "phirkee"?.. If you want to discuss in the uneducated terms that pakistani mechanics use - then thats OK too, Im versed in them too, unfortunately I also have a few degrees in education, I think they should be considered useless.
anyway a test means that it is universal and has units of measure that are defined as constants.
now lets take your test on a suzuki mehran and feel the bonnet after driving at a speed of 20 km/h for 2 hours and then stopping in Sibbi in the middle of July and testing the heat. It may burn you.
Lets do that on a mercedes with 3.2 litre or 4.3 litre engine, the bonnet will be very cool...... the german engine runs hotter (normally at 90C) all the time and has panels under the car - so hot air doesnt exhaust quick. Why would it be cool?
Theres a thick layer of insulation on the bonnet. <--- any hint
Similarly lets take a person who has diabetes and usually has numb fingers because he binges on "broast" - he wont feel a thing as his fingers are numb. Or lets take both cars to Abbotabad in December and do the test. Any ideas what will happen?