I run regular old Prestone 50/50 mix. No problems.
WHAT IS MAXIMA COOLANOL?
Maxima Coolanol coolant is premixed with demineralized water mostly for user convenience (the impurities are removed from tap water using a reverse-osmosis deionizing process). Besides an additional anti-foam and water pump lubricant, Maxima adds a surfactant that improves the coolant's heat absorbing abilities. Maxima Coolanol has a fluorescent green color.
WHAT IS A SURFACTANT?
A surfactant is a solute which reduces the surface tension of fluid. Reducing surface tension makes water cling tighter against the surface it's trying to cool, thus improving heat transfer.
You can make your own surfactant by squirting a few shots of liquid dishwasher soap into a radiator filled with distilled water. The slippery, soapy solution breaks surface tension and will help your homemade coolant transfer heat better. That is until the temperature climbs upwards of 200-degrees. The surfactants that Maxima uses might be soap-like, but they are designed for the high temperatures of motocross use.
WHAT IS ENGINE ICE?
Engine Ice is a premixed coolant, but they claim to up the ante by mixing a propylene glycol with deionized water. Engine Ice says that their deionizing process removes more harmful minerals and chemicals than is possible through distillation. The synthetic-based propylene glycol is claimed to be more efficient at dissipating heat. Engine Ice has an aqua-blue color.
ENGINE ICE OR COOLANOL?
Anyone would be remiss to claim that propylene glycol (Engine Ice) is superior to ethylene glycol (Maxima) or vice versa. As many studies as you can find claiming superior test results for one, you can find just as many studies supporting the other.
The deionizing process removes positive, harsh particulates by filtering out the charged ions. There is no scientific data supporting that deionized water has less bicarbonates (magnesium, calcium or iron) than distilled water. Some automotive coolants have more abrasives than are good for motorcycle water pumps.
As a rule of thumb, Maxima and Engine Ice are both better than water. If you don't use a motocross-specific coolant, shop for an automotive product with a low silicate and phosphate-free content. Check that the coolant is compatible with all metals including aluminum and magnesium. Any coolant should be mixed 50/50 with deionized or distilled water.
WHAT IS WATERWETTER?
Manufactured by Red Line, this pinkish-red surfactant can be added to coolant or plain water to reduce surface tension. Additional ingredients improve the coolant's ability to be attracted to and cling against hot surfaces, also improving heat transfer. While it includes water pump lubricant, anti-cavitation and anti-corrosive additives, it does not raise the boiling point of water (like Maxima Coolanol or Engine Ice). The idea behind WaterWetter is to improve cooling properties and lower the operating temperature. Four ounces of WaterWetter is enough to treat a gallon of water and coolant.
WaterWetter has become extremely popular with the factory teams. Factory mechanics support Red Line's claim that a WaterWetter mixed with distilled water runs up to 5 degrees cooler than water and glycol coolant mixes.
I have a couple of cases on the way that we will be doing a review on.Engine Ice Hi-Performance Coolant is an antifreeze offering freeze protection to -26oF (26 degrees below zero)
I thought both products worked equally well buster. I used the Engine Ice year round, including sub-zero temperatures with the wife's Grizzly 700, and never had any problems from it.
Very true buster fuel is colder than the combustian chamber so the more you add the less heat is exhausted. The only draw back is less fuel economy and less power.Good to know. Can't wait to review them.
I see a lot of threads on the web about the BF750i feeling from a temp around the leg area about it running hot. Many people ask if something that will cool coolant temp down will solve their problem. Obviously, with a product like this, that has the potential to reduce engine temps by 20-50 degrees, it won't cure leg heat. I just wonder if the problem on the BF750i is more that it may be running a bit lean which makes it run a little warmer.
I know at a time, my Grizz was runnning lean and felt hot on the leg. Once I tuned in my fuel controller so it wasn't running lean anymore, the heat, or lack thereof, was fine and my leg no longer got hot.
Just a thought.