Green jug of Peak Sierra antifreeze coolant full strength concentrate, 1 gallon size.

Green plastic antifreeze coolant container with blue label and white cap, shown from the back.

Thumbnail of Green jug of Peak Sierra antifreeze coolant full strength concentrate, 1 gallon size.

Thumbnail of Green plastic antifreeze coolant container with blue label and white cap, shown from the back.

Phosphate Free Coolant

Product:	COOLANT-SIERRA
Works With:	1980-2003
Manufacturer:	Peak
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Proposition 65: This product may contain chemicals known to the state of California to cause cancer, birth defects, or other reproductive harm.

Full-strength phosphate-free engine antifreeze & coolant concentrate. Sold by the gallon.

Applications: All years Vanagon & Eurovan.

Directions for Use: Dilute 50/50 with Distilled Water Only. Learn more here.

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.

Specific benefits include:
• Provides excellent engine protection against freeze-up, boil-over, and corrosion, while maintaining heat transfer properties
• Helps prevent 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.