Originally Posted By: Loobed
Originally Posted By: Boss302fan
Waste of money...
+1
Water wetter was designed for racing where the rules do not allow the use of of standard coolant because if the coolant got on the track it would become slippery and cause an unsafe condition. Water Wetter and coolant will not offer a normal street vehicle any significant benefit. If someone is already using Amsoil coolant, you don't need WW.
The water wetter will not cool your engine any more than temperature of your thermostat. If the thermostat stays closed until the coolant reaches 200*F then the water wetter won't make the engine run less than 200*F regardless of how well the WW works. If you do a lot of towing or your cooling system is taxed, then it may help.
The thing is, I don't know how taxed my cooling system is. The car is known to have headgasket problems with age so I suspect it is taxed a bit. It has a 170F thermostat located after the radiator and before the water pump. The ECU reports temperatures as high as 206F. I'm not sure how much heat the coolant gets between the thermostat location and the location of the temp sensor which is located on the top of the block, in the back on the driver's side. The thermostat and pump are on the bottom of the block, in the front near center. Supposedly this thermostat if full open at 194F. So maybe it isn't fully open and the coolant is picking up more than 12F worth of heat. Or maybe it is fully open and the engine just gets pretty hot when doing city driving. If it is the latter case, I would benefit from water wetter. If it is the former, then not so much. I guess one way to find out would be to put a lower temp thermostat in and see if the temperature drops. If it does, I know my tstat was not running full open. if it doesn't drop, then both tstats had to have been running fully open.