Review on Gates 25484 Radiator Coolant Hose by John Lewis

As engine compartment sizes shrink, coolant hoses can fail due to factors such as heat, abrasion and oil. In addition, new conditions appear, such as electrochemical degradation. Gates has determined that electrochemical degradation, or ECD, occurs when a hose, liquid coolant (ethylene glycol, antifreeze, and water), and engine/radiator fittings form an electrochemical cell, or "battery." ." This reaction causes micro-cracks in the hose tube, allowing coolant to enter the reinforcement. Accelerated by intense heat and flexing, the hose can puncture or rupture under normal pressure. Top reasons for replacing coolant hoses every two to four years To avoid damage from ECD To avoid this, Gates has developed an electrochemically resistant ECR coolant hose made from a special EPDM compound (ethylene propylene rubber).