Vydyne R530HR is specifically formulated to give superior hydrolysis resistance for demanding automotive cooling system components. This product has demonstrated more than twice the tensile strength and elongation retention of standard 30% glass-fiber reinforced PA66 after 3,500 hours of aging in automotive coolant at 120° C. Vydyne R530HR demonstrates similar property retention benefits at 130° C for 1,000 hours of coolant aging as well.