Coolant Additive, Diesel, Water Wetter, 15 fluid oz., Each

Water Wetter cooling benefits just for diesels.
Designed for heavy-duty diesel engines that use more than 33 percent antifreeze, this treatment improves the ability of coolant to wet heat transfer by 50 percent. This provides significantly better coolant contact in the cylinder head, in turn reducing coolant and cylinder head temperatures by as much as 10-20 degrees F. Red Line Diesel Water Wetter won't lower the temperature of the cooling system below the thermostat temperature, and is effective when the thermostat is wide open, such as in heavy traffic or climbing long grades. This improvement in wetting helps reduce cavitation in liners and water pumps.