PEAK SIERRA Antifreeze + Coolant demonstrates excellent corrosion prevention performance in all standard industry tests. Meets all of GM 1899 and GM 1825, ASTM D3306, including ASTM D1384 (Glassware Corrosion), ASTM D4340 (Hot Surface Aluminum Corrosion), ASTM D2570 (Simulated Service) and ASTM D2809 (Cavitation Erosion Corrosion-Aluminum Pumps).SIERRA Antifreeze/Coolant is formulated with propylene glycol rather than conventional ethylene glycol - the base used for traditional antifreeze. While still providing performance characteristics comparable to ethylene glycol based antifreeze, SIERRA Antifreeze/Coolant provides additional benefits. SIERRA Antifreeze/Coolant’s propylene glycol formula is less toxic and therefore safer than ethylene glycol coolants. This provides safety to children, pets and wildlife exposed to antifreeze leakage.
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