Thread: mb quality?
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Old 09-22-2002, 01:36 PM
Posts: n/a
Since the 1960s, manufacturers have made automotive coolant hoses using EPDM (ethylene propylene rubber) aka synthetic compounds. ECD (electrochemical degradation) was a common occurence where the hose, liquid coolant (ethylene glycol antifreeze and water), and the engine/radiator fittings form a galvanic cell which cracks the hose.

More recently co's developed an electrochemically-resistant coolant hose using a new EPDM formulation, so perhaps that's what the forum was discussing (?)
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