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In my 1993 240, can I mix its old fluorescent green coolant with new OEM blue coolant, part # 9434699-6? Is this part even the right coolant for a 1993 240?
While replacing my leaking heater control valve, I drained all the fluorescent green coolant. When I asked my local Volvo dealership for 240 coolant, they sold me part # 9434699-6, a gallon of blue coolant. But I need 1.25 gallons (mixed with 1.25 gal of water to give the required 2.5 gal of coolant).
Can I mix some of the old, used, green coolant with this new blue coolant? 4 parts new blue to 1 part old green. Or should I just buy another gallon of the blue, using only 1/4 of it? Thanks.
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- FireFox31
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