Peak SEP003 Sierra Maximum Performance Antifreeze/Coolant, 1 Gallon

Write a review
Propylene glycol formula that is less toxic than ethylene glycol antifreeze. Provides outstanding performance. Helps prevent accidental poisoning of pets.
SKU: 42896301
Shop more products by Peak.

In Stock
Or Use
Request a Bulk Quote

Thank you for your quote request. We will be in touch.



Peak is the pioneer and market leader in the safer propylene glycol (PG) antifreeze category. Sierra Antifreeze 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. A premium automotive coolant that provides excellent freeze-up and boil-over protection and outstanding corrosion protection.


  • Size: 1 Gallon
  • Green color
  • Propylene glycol formula that is less toxic than ethylene glycol antifreeze
  • Provides outstanding performance
  • Plastic bottle
  • When diluted 50% with water protects up to -26°F and protects against boil-overs up to 256°F (using a closed system: 15 psi cap)
  • 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 in the environment
  • Meets all requirements of ASTM D5216 (Propylene Glycol Base Engine Coolant), ASTM D1384 (Glassware Corrosion), ASTM D4340 (Hot Surface Aluminum Corrosion), ASTM D2570 (Simulated Service) and ASTM D2809 (Cavitation Erosion Corrosion - Aluminum Pumps)
Reproductive Harm -


SKU: 42896301
UPC: 074804102475
Brand: Peak
Weight: 9.66 lb
Attachments: MSDS Sheets,