What happens if you put straight antifreeze in 100 degree weather?

Putting straight antifreeze in a vehicle during 100-degree weather can lead to overheating issues. Antifreeze, or coolant, needs to be mixed with water to effectively regulate engine temperature; pure antifreeze does not transfer heat as efficiently. Additionally, using undiluted antifreeze can result in inadequate lubrication of engine components and potential damage. It's essential to maintain the proper coolant-to-water ratio for optimal performance and protection.