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Red Line WaterWetter


  • Unique agent for cooling systems that doubles the wetting ability of water
  • Rust and corrosion protection allows for use of straight water in racing or reduced antifreeze levels in warm climates
  • Improves heat transfer and reduces cylinder head temperature
  • May allow more spark advance for increase power and efficiency
  • Use one bottle for most passenger cars and light trucks, treats 3 to 5 gallons or 13.2 to 15.9 liters. Vehicles with larger cooling systems should use two bottles. Small cooling systems should use 1oz (3 to 4 capfuls) per quart
  • Compatible with new or used antifreeze (including DEX-COOLTM and long-life versions) to improve the heat transfer of ethylene and propylene glycol systems
  • Satisfies ASTM D2570 and ASTM D1384 corrosion tests for glycol-based antifreezes
  • Reduces or eliminates bubbles or vapor barrier that form on hot metal surfaces to reduce coolant temperatures by up to 20°
  • Superior heat transfer properties compared to glycol-based antifreeze
  • Compatible with new or used antifreeze (including DEX-COOL and long-life versions) to improve the heat transfer of ethylene and propylene glycol systems
  • Improves heat transfer and reduces cylinder head temperature
  • Designed for use with all modern aluminum, cast iron, copper, brass and bronze cooling systems
  • Cleans and lubricates water pump seals
  • Reduces cavitation and complexes with hard water to reduce scaling
  • Does not lower cooling system below the thermostatically-controlled temperature
4.5 / 5.0
8 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Best coolant I've found so far!
Easy to use in motorcycles, cars, trucks, lawnmowers.

PROS: Very inexpensive, Raises boiling point, Cant use too much, Easy to mix instructions

November 2, 2009
Kept my temp low
I bought this because it was decent and can be mix with diluted water and simple to use.

PROS: any

January 14, 2014
RedLine WaterWetter
It simply doesnt get ANY better than THIS stuff right here!
July 28, 2015
Great Product
It was delivered to my house one day after making my purchase!!!

PROS: Cools engine very well, Easy to use concentration

CONS: No larger sizes

May 14, 2010
it dropped my coolant tempererature
My superhawk ran hot on those summer
Days stuck in traffic. Waterwetter helped out a lot

PROS: My Bike Stayed Cool

October 20, 2012
Kept "Le Perculator" cool!
Keeps the notoriously '85 Ninja 900 cooler longer before the fan kicks in. The first Ninja was notorious for over heating, the French called it "Le Perculator". With the fan working properly, I can keep the temp needle staying below half! Doesn't sound like a big deal, but back in the day it was a major problem for this bike.

Don't forget to use distilled water and a little anti-freeze for corrosion protection.
August 21, 2013
great temp reduction
I ran this instead of using engine ice and noticed temps were lower than my friends using the engine ice. Highest operating temp i saw, even while riding hard was 178 as long as there was airflow, once i got stuck in stop and go traffic temps hit 210 and the distilled water i mixed in began to boil, but i dont have a reservoir cap.

PROS: Operating Temps Below 180

CONS: Had Tendency To Boil

BEST USES: Year Roundexcept Freeze, Track days, Hot days
April 4, 2014
15-20 degree difference
Put this in my GSXR750 and immediately saw a difference in running temps. On average I've noticed that it's 15-20 degrees cooler than the standard OEM coolant. When stopped in traffic, I rarely hear the cooling fan come on. The only bad point is if you're in an area that experiences freezing temps, you won't see the max benefits of WaterWetter....as adding anti-freeze will reduce its effectiveness.

PROS: Super Easy To Prep, Cooling Differenceof 15-

CONS: If You Live In A Region W

November 3, 2015
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Product Style Item # Manufacturer Product # Availability
12OZ 952557 80204 In Stock: Ships within 24 hours