PEAK® is the pioneer and market leader in the safer propylene glycol (PG) antifreeze category. SIERRA® Antifreeze/Coolant is formulated with PG rather than ethylene glycol – the base for traditional antifreeze. Because of its PG formula, SIERRA® Antifreeze is less toxic and therefore safer for people, pets, and wildlife than conventional antifreeze. It is a premium automotive coolant that provides excellent freeze-up and boil-over protection and outstanding corrosion protection.

Features & Benefits:

• Provides excellent engine protection against freeze-up, boil-over and corrosion, while maintaining heat transfer properties
• Helps prevent the accidental poisoning of pets
• Helps protect wildlife and the environment SIERRA® Antifreeze is a propylene-based antifreeze that requires the use of a special ball tester to check its freezing point.