In short no. Your cars cooling system is a sealed unit therefore it should not use any coolant whatsoever no matter the ambient temperature.
Example sentence - The coolant in my car was leaking out.
Always use antifreeze. Water does not have any water pump lubricants or anti corrosion properties, antifreeze coolant does.
No. Use Coolant from honda dealership
Refrigerant - not coolant - and no, they are not compatible.
You can use any commercial coolant for automobiles or Honda's own coolant.
Just use the factory mercdes Benz coolant, it comes in a white container. I don't belive that any other coolants are recommended for your car.
Only if it's leaking.
1990 was before GM switched to using Dex-Cool extended life coolant, so any of the traditional green ethylene glycol or universal coolant/antifreezes would work perfectly. Any brand will suit the car well.
The company that makes the all model coolant claims you can.
use the pink coolant. any other coolant in 6 l will gum up and can damage engine
No the cap is vented and push any unwanted coolant out