Hey scotty I want to flush my 1988 560sl heater core. If i flushed the cars coolant system wouldn't it just flush the heater core with it? And looking at hoses the heater core was never flushed.

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Techsus
Techsus

Try here: https://www.youtube.com/watch?v=5bIpXvHNQbQ

Scotty Kilmer
Scotty Kilmer

Editor

heater cores have little flow when overall flushing. Remove heater hoses and flush heater core directly by itself