Old World’s Hybrid Blue is a hybrid organic acid technology extended service interval coolant/antifreeze with a phosphate-borate dual-buffer system and a low silicate level. Hybrid Blue, part of the Peak Commercial and Industrial Fleet Charge lineup, is designed for use in all heavy-duty engines, regardless of fuel type, as well as in light-duty and automobile applications. Blue in color, the product is formulated to simplify coolant maintenance while extending service intervals up to 150,000 miles or 4,000 hours of operation. It is designed to work with liquid and slow-release supplemental coolant additives and is available in bulk, drums and totes in both 50/50 prediluted and concentrate.
