They say it is better for aluminum than water based antifeezes.

One of the biggest reasons that it works better is that as water and ethgly go by a hot part, the coolant microboils, and the water vapor stays intermixed in the coolant clear until it gets cooled in the radiator.

The bottom line is water vapor causes a barrier for the coolant to reach the head and allows hot spots to form and keep engine parts much hotter than the coolant.

evans NGW coolant does not maintain vapor barriers since it condenses fast. This causes it to much more effectively transfer heat from the engine and to the radiator. They say it also does not cavitate in the pump.

They say you do not need more than 4psi radiator cap, and some other stuff. But, they say you CAN use it in your car or motorcycle without any modification, and it will preform better than ethgly/water.