It has almost become a norm for most mechanics to advise you to remove your thermostat once you buy your new "Tokunbo" vehicle. Not only that, you are requested to buy double-cell radiator.

The question is, do you need it in this climate of ours?

The detailed answer can be read here.[url][http://www.fixyourcarng1.com/that-thermostat-do-you-have-yours-intact/]

I agree with you quite frankly on your pin points and more should be done in educating many of our "uneducated" mechanics and sadly ignorant end users.

Allow me to chip in a few tips on how to manage and solve overheating issues in vehicles. Please bear in mind that I am NOT an auto mechanic in practice but I do take my time to read car care tips online and as I follow these processes I became better with maintaining my car over the years.

Once you notice your car overheating be patient enough to allow the engine cool off then follow the below process.

1. Check your water reservoir. It's most likely empty. Some reservoirs are easily removable like in toyota cars. Remove it and empty water content. Get a good radiator coolant and pour in content to the required fill level. Also refill your radiator with clean water. Please be sure that the water reservoir is not broken or punctured in any place as this will cause quick evaporation of the liquid content in your radiator there by causing it to overheat frequently. It's very important that you replace it if it's leaking.

2. Check the radiator cap. (small but mighty).
Yes small but Mighty indeed. As small and almost irrelevant as it looks, a bad radiator cap can/will cause your radiator to loose liquid content rapidly there by causing overheat. Quite unnoticeable, the radiator cap has a small rubber seal beneath it which holds in water and ensures the radiator is air tight. If you notice this rubber is not there or you are not sure if it is or NOT please get another one. Be sure you replace it with specified one. You should find a number on the old cap you removed. Use it as a guide when getting a replacement.

With your thermostat in good functional condition your overheating problems should be over. Endeavour to pour in frequently required radiator coolant in the water reservoir. This helps prevents rusts and corrosion in the radiator which causes the damage on the radiator eventually leading to overheating.

Simple answer; YES.

yomingr:
I agree with you quite frankly on your pin points and more should be done in educating many of our "uneducated" mechanics and sadly ignorant end users.
Allow me to chip in a few tips on how to manage and solve overheating issues in vehicles. Please bear in mind that I am NOT an auto mechanic in practice but I do take my time to read car care tips online and as I follow these processes I became better with maintaining my car over the years.
Once you notice your car overheating be patient enough to allow the engine cool off then follow the below process.
1. Check your water reservoir. It's most likely empty. Some reservoirs are easily removable like in toyota cars. Remove it and empty water content. Get a good radiator coolant and pour in content to the required fill level. Also refill your radiator with clean water. Please be sure that the water reservoir is not broken or punctured in any place as this will cause quick evaporation of the liquid content in your radiator there by causing it to overheat frequently. It's very important that you replace it if it's leaking.
2. Check the radiator cap. (small but mighty).
Yes small but Mighty indeed. As small and almost irrelevant as it looks, a bad radiator cap can/will cause your radiator to loose liquid content rapidly there by causing overheat. Quite unnoticeable, the radiator cap has a small rubber seal beneath it which holds in water and ensures the radiator is air tight. If you notice this rubber is not there or you are not sure if it is or NOT please get another one. Be sure you replace it with specified one. You should find a number on the old cap you removed. Use it as a guide when getting a replacement.
With your thermostat in good functional condition your overheating problems should be over. Endeavour to pour in frequently required radiator coolant in the water reservoir. This helps prevents rusts and corrosion in the radiator which causes the damage on the radiator eventually leading to overheating.

I agree with you. Furthermore, the cooling system is a closed loop and should not lose pressure. In order words, the coolant should not drop. However, frequent top-up is a way to manage it. For a permanent solution, engage your Diagnostics company to use a coolant system diagnostic tool to check where any leak might be and get it fixed.