Prestone

Prestone is a brand of automotive coolants and antifreeze products. The company was founded in 1927 by the Union Carbide Company and was originally known as the Preston Oil Company. The name "Prestone" was derived from the company's product, which used ethylene glycol as its primary ingredient. Ethylene glycol is a chemical compound that lowers the freezing point and raises the boiling point of water, making it an effective additive for automotive cooling systems.

Prestone antifreeze/coolant is designed to protect engines from both freezing in cold weather and overheating in hot weather. It also contains additives to prevent corrosion and scale buildup within the cooling system, which can prolong the life of engine components. The brand offers a range of products formulated for different vehicle types and operating conditions, including conventional green antifreeze and extended-life formulas. Prestone products are widely available in automotive parts stores and general retailers. The brand has become synonymous with antifreeze for many consumers due to its long history and widespread distribution.