Should I Use Full Strength Antifreeze?

Some mechanics-technicians say it's just fine - do it! Others claim that pure antifreeze will damage the car's cooling system. Manufacturers recommend not using more than 70 percent, but they don't say why and won't respond to a consumer's question.

Is it bad to use full strength antifreeze?

Pure antifreeze lacks sufficient heat capacity to keep the engine cool. In fact, if you put pure antifreeze into the cooling system, the heat-transfer capabilities are lowered by 35%, and it could really damage on the engine, especially in hot weather.

What happens if you use full strength coolant?

Filling a Cooling System With Pure Antifreeze Can Also Damage the Engine. Not only does pure antifreeze have a higher freezing temperature than coolant, but a couple of issues will also arise if you use only it in your cooling system: The engine gets more prone to overheating.