The Evans Coolant is also 100% water free, which means that it builds up much less pressure when heating up. We all know that modern 4 stroke dirt bikes run very hot and they frequently over heat, especially in low air flow conditions such as technical trail riding. The reason why we chose the Evans coolant, is because it has an impressive boiling point of 375F. The best coolant for a 4 stroke dirt bike is Evans Coolant. Having to refill coolant out on the trails from a water source or from your hydration backpack, means that the Engine Ice will remain its cooling performance until you can flush the system with free coolant. Most two stroke dirt bikes are trail oriented. It is premixed with distilled water(deionized water) which means that you can add water to the solution if you ever need to refill it. ![]() It protects the dirt bike from overheating very well because of the high boiling point.Įngine Ice is a propylene glycol coolant solution that has relatively high boiling point of 256F. The best coolant for a 2 stroke dirt bike is Engine Ice. Check on Engine Ice $$ 256F boiling point, biodegradable, Check on Maxima Off-Road Coolant $ Ready-to-use formula, boiling point: 285F Check on Top 3 best coolant for dirt bikes Best Coolant for a 2 Stroke Dirt Bike Dirt Bike Coolant Price Pros Where to Buy Evans Coolant $$$ No water, very high 375F boiling point, much less pressure build up. In our experience, the Engine Ice is easiest to use, and protects the dirt bike from overheating very effectively. ![]() The purpose of the dirt bike coolant is to protect the motor from freezing temperatures and dirt bike overheating.īased on dirt bike enthusiast out there, we collected the top 3 best coolants available for dirt bikes for you to choose from. You can also use an oil drain pan or similar to catch the old coolant as it will be messy. You may need to replace few of the hose clamps or hoses if you have a leak, but in most cases a new engine coolant and regular tools should suffice. There are no special tools required to flush the old radiator coolant. As an Amazon Affiliate we earn from qualifying purchases Tools Required for Flushing Dirt Bike Coolant If you use these links to buy something we may earn a commission at no additional cost to you. Step 5: Warm Up the Dirt Bike and Check Dirt Bike Coolant Levelīy following these five easy steps, you will be able to flush the dirt bike coolant like a pro!.Step 3: Refill With New Dirt Bike Coolant.Step 2: Flush Old Dirt Bike Coolant Into a Drain Pan.Step 1: Clear Space To Access the Radiator Main Hoses.How To Change Dirt Bike Coolant in 5 Steps.Tools Required for Flushing Dirt Bike Coolant.Put another way, if your engine puts out enough heat to warm your 50/50 coolant by 10C, it would warm pure PG by 13.5C. So, to oversimplify a little bit, if your 10-quart cooling system moves some amount of heat at a specific temperature, you'd need a 13.6 quart PG system or an 8-quart pure H2O system. Straight PG is 0.59, and the usual 50/50 EG/H2O mix is around 0.8. The specific heat of water (in cal/g or kcal/kg) is 1.0. I ran my QSW on about 95% water, 5% glycol (for corrosion resistance) one summer. as much water as you can run without running the risk of freezing) will cause it to run cooler. ![]() In a system with a HUGE radiator (say, a GM), it's probably not such a bad idea, but in systems that are a little small, MORE specific heat (e.g. If higher boiling point alone were a good thing, I would put biodiesel (soybean oil ester) in my cooling system-its boiling point is over 200C With a 20psi cap on, you could be well over 200C before you boiled the coolant. Since PG doesn't boil until 188C, you can get your engine all the way up to 188C with zero pressure-not exactly a good thing in an engine designed to run in the mid-90s. In order to move as much heat, you have to heat the PG to a higher temperature to get that heat away from the engine, causing your engine to run hotter. While it is true that 100% PG will run no pressure and cause less stress on your hoses, it simply cannot move heat away from your engine as quickly as water or EG/water mix can. Keep in mind that your radiator doesn't get rid of temperature (degrees), it has to get rid of heat energy (calories, joules, Btu, however you want to measure). On a car with a cooling system that's too small for the hot summer already, you're reducing the capacity further by running Evans. The problem is that waterless (100% propylene glycol) coolant has a considerably lower specific heat than water, that is, it takes less heat energy to warm waterless coolant than a 50/50 antifreeze mix (which is less still than straight water).
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