Zerex Cooling System Antifreeze Coolant Concentrate 55 gal

6 Year / 600,000 Mile Protection, Fully Formulated, CAT EC-1 & Cummins 14603 Approved Fully formulated or pre-charged to protect against liner pitting and hard water scale 3 Years / 300,000 mile protection guaranteed Meets the Caterpillar EC-1, Cummins 14603, and DDC long-life specifications Extend drain interval to 6 years, 14,000 hours, or 600,000 miles with the use of ZEREX™ Extended Life Extender