Best Motorcycle Coolant for Hot Weather

When it comes to motorcycle maintenance, it’s easy to forget to change the coolant. An “I’ll deal with it later” approach is usually taken. However, using a strong coolant and antifreeze is necessary for shielding your bike from excessive corrosion and heat. What is the best motorcycle coolant for hot weather? Here are few things to watch for when it comes time to replace the coolant in your motorcycle.

Heat must be dissipated by a motorcycle coolant

The coolant’s primary function is to reduce engine heat. Depending on working conditions, ambient temperatures, and engine design, the combustion chamber generates extreme heat that can quickly reach up to 1,500°F (816°C).

When heated, metal expands, and a motorbike’s motor was designed to enable the expansion of metal to a certain degree. Nevertheless, severe heat can cause components to stretch beyond acceptable limits, resulting in metal-on-metal interaction. For instance, the piston will over-expand and will cause scuffing on the wall of the cylinder. The head of the cylinder will suffer from warping, resulting in a leak in the head gasket. Then it’s only a short period of time before motor failure.

Heat must be absorbed by the coolant and carried to the radiator, where it is then dissipated into the air. Most applications in power sports, including dirt bikes, ATVs, and motorcycles, include the use of coolants that are made with ethylene glycol because it dissipates heat well. The boil-over rating of the coolant indicates how effectively it defends against high heat. AMSOIL Powersports Antifreeze & Coolant defends against boil-over at temperatures as high as 226°F (108°C).

Motorcycle coolants must be corrosion-resistant

If the primary function of motorcycle, dirt bike, ATV, and other power sports coolants is to dissipate heat, avoiding corrosion is mission 1B.

As opposed to passenger-car cooling systems, the majority of power sports cooling systems utilize more aluminum. Magnesium is also used by others. These metals are stronger and lighter than iron, but they have a higher sensitivity to corrosion and water quality.

Engine layout will also put further strain on the motorcycles coolant’s capability to resist corrosion. Previously, most power sports motors had coolant passages just across the head and cylinder, rather than inside the motor block, like in a car motor. Manufacturers started introducing motors that have liquid-cooled blocks in the mid-2000s, however, in order to improve performance. While this layout improves motor cooling, the coolant is exposed to higher levels of metal, necessitating the use of corrosion resistance.

Even Harley-Davidson, the undisputed leader in air-cooled motors, is breaking from tradition by introducing more motors that utilize liquid cooling. A liquid-cooled cylinder head is now standard on some Harley Tri-Glides, Ultra-Glides, and Road Glides.

Corrosion in power sports cooling systems can limit heat flow, causing engine temperatures to rise. If it gets hot enough, coolant passages will get clogged and limit flow, resulting in overheating. Corrosive metal will also cause leaking in cooling systems, making a spill on the floor of your garage and leaving you with a hefty repair bill.

For protective purposes, utilize a motorcycle coolant or other power sports coolant that has been 50/50 pre-mixed using heavily filtered water. This removes toxins that can help accelerate corrosion. The motorcycle coolant ideally should also include powerful additives engineered specially for magnesium, aluminum, and various other metals used in power sports cooling systems.

Motorcycle coolants should have a formulation with a long lifespan

Although not needed, utilizing a formulation with a long lifespan has advantages. Most enthusiasts do not want to contend with the inconvenience of replacing coolant more often than is absolutely necessary. Utilizing a long-lasting formulation decreases maintenance while increasing comfort.

AMSOIL Powersports Antifreeze & Coolant: The Best Motorcycle Coolant for Hot Weather

AMSOIL Powersports Antifreeze & Coolant ticks all the checkpoints and performs all of the functions that a decent motorcycle, dirt bike, ATV, and other power sports coolants can. It goes above and beyond the competition and is the best motorcycle coolant for hot weather, as well as extremely cold weather conditions and everything in between. Its innovative formulation aids in temperature control in high-revving, hot-running power sports systems. Its long-lasting formula offers all-season defense for as long as five years. When combined with highly pure water, this aids in the prevention of deposits and scale, allowing your engine to operate cleanly.

  • 50/50 pre-mixed with highly pure water
  • OEM specifications are met by the ethylene-glycol formula
  • The formulation has a five-year lifespan
  • Clear of borates, nitrites, and phosphates
  • Compatible with aluminum, bronze/brass alloys, and copper
  • Defense from boil-over as high as 226°F (108°C)
  • Defense from freezing as low as -34°F (-37°C)

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