^^^^ agreed on all that, I am totally paranoid to try a citrus flush on this car, it has the evil servo system with the miles of piping and the car has sat for at least 20 years of its life....when I change the coolant, I pull as many hoses as I can and hook up a high pressure nozzle on the garden hose, that's as far as I want to go....I just know doing a citrus flush will kill the heater core...

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