The water wetter does a great job and I have been using it for five years with good results. Here are some tips that will help you get the most for cooling and wheeling in extra hot weather.
Use a higher water concentration in the coolant. Coolant actually is a insulator and does not help in cooling. It does raise the boiling temp but a higher water ratio of 20% coolant will protect against boil-over.
Check your pressure cap. If your pressure cap is not sealing correctly or not maintaining enough pressure your coolant will boil-over much sooner due to the low pressure.
Check your fan. Clutch fans do wear out on occasion and make sure the fan is not bound up and being slowed down by a fan shroud or debris in the fan shroud.
Keep the grill and radiator clean and clear. Installing a tall winch will slow down the air flow and make the cooling less efficient. Also clean out the mud, dirt and other things that will slow down the air flow.
Before running out to get a 180 or even 160 thermostat keep in mind a thermostat will often time never help in cooling. If your motor is running hot a cooler thermostat will only delay the motor from over-heating. A cooler thermostat is not a good idea if you drive in an area that gets extremely cold because the motor will not be able to warm up and cause you to use more fuel and will trip the check engine light and fail smog checks. Do test your thermostat if you don’t think it is working correctly.
Check your hoses especially the lower radiator hose. Older lower hoses may collapse because it is under suction. If you have ever changed a lower hose you will notice a spring in the lower hose, this is to prevent collapsing of this hose.
For cooling problems an electrical fan is not going to help. An engine driven fan will out perform an electric fan. Adding an additional electric fan in the front will help.
The stock radiator is a toy because of all the plastic involved and I would recommend a quality 3 row copper radiator. The 3 row will hold more coolant and cool more efficiently.
If you are stuck with very high coolant temps you can do the following to keep from blowing your top;
1. Turn off the AC (if you had it on) and turn on the heater full blast.
2. Do keep the motor running but don’t put it under a load. If you can keep the motor running the water will keep on circulating and the fan will keep on turning, you maybe able to cool it back down.
3. Make sure the belt is still on and the fan is still turning. You will be able to confirm this without opening up the hood by placing your hand near the front fenders to feel for the airflow.
4. If you have to open the hood, do so knowing that the pressure cap or a hose may let go scalding you with steam and very hot water. If you can avoid staying away from the radiator and hoses, do so until it cools.
5. Do not open the radiator cap. For some reason people think that removing the cap will cool things down this is not true at all. Keep the cap on,