The Safer Antifreeze
SIERRA Antifreeze/Coolant is a premium quality, propylene glycol (PG) based antifreeze that provides engine protection comparable to that provided by premium conventional ethylene glycol (EG) based antifreezes.

Because of it's PG formulation, SIERRA Antifreeze is less toxic than conventional EG based antifreeze and, therefore, is safer to pets, people and wildlife in cases of spills, leaks, boil-overs or careless disposal.