Cooling suggestions:

1. In climates with no real concern about freezing, remember that nothing cools better than pure demineralized water. Obviously, to that pure water we need corrosion inhibiter. Happily, Waterwetter has all that, plus the great quality of making boiling bubbles a lot smaller so that more coolant actually directly touches the metal and carries heat away. With freezing, use Waterwetter and around 15% alcohol coolant. Alcohol is a lousy "coolant".

2. I think 107's have a bit too much pressure under the car and in the engine area over 80 mph. That reduces the delta across the radiator.

3. Merc. radiators are dogs. Get an aluminum one.

4. Trash the metal fan in favor of an electric. Real easy to install, far safer and more effective.

Mark