What is the blend ratio of antifreeze used in the Pumper units' coolant?

The blend ratio of antifreeze used in the Pumper units' coolant is a critical aspect for ensuring optimal performance and protection against extreme temperatures. A 50/50 blend of antifreeze to water is commonly utilized in many automotive and emergency service vehicles, including fire department pumpers, for several key reasons.

Firstly, this ratio provides an effective freeze protection down to approximately -34°F (-37°C), which is crucial for maintaining fluidity in cold environments and preventing engine damage. Secondly, the 50/50 mix achieves adequate boiling point elevation, helping to prevent overheating during high-stress operations. This balance also aids in corrosion protection for the cooling system components, as both antifreeze and water play essential roles in maintaining the integrity of engine parts.

The other blend ratios, while they may provide varying degrees of protection or cooling efficiency, do not offer the same universal advantages that the 50/50 blend provides under typical operating conditions for fire department vehicles. Therefore, understanding the significance of this blend helps ensure that the vehicles are properly maintained for safety and reliability on the job.