991 cooling system capacity
06-14-2018, 09:14 PM
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991 cooling system capacity
I recently had the misfortune of losing all the coolant in my 2014 911 Carrera due to leaving the coolant refill cap off. The auto parts store indicated I needed about 6 gallons of coolant to refill, and I have read several articles here and on other forums indicating the same. But when I took it to the dealer for a proper refill he indicated that the system only holds about 2 gallons of coolant and replaced all the coolant with Porsche coolant, charging me for only 2 gallons. So my question is: what is the actual capacity? Could the dealer be wrong?
06-14-2018, 10:27 PM
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You didn't lose everything. I'd trust what the dealership did.
Total capacity is about 6 gallons. 3 coolant. And 3 distilled water.
Total capacity is about 6 gallons. 3 coolant. And 3 distilled water.
06-15-2018, 12:02 AM
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I was charged for 2 gallons of coolant. I don't know if it was the premixed 50-50 mix or the undiluted, but in either case the most he could have added was 4 gallons. So if the total capacity is about 6 gallons, that means the technician replaced only about 2/3 (at most) of the coolant. But when I talked to the service rep he insisted that the system capacity is only about 2 gallons,so all of the coolant was replaced. So somebody here is mistaken. May I respectfully ask how you know what the cooling system capacity is?
06-15-2018, 12:08 AM
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I doubt they did a proper flush. The correct way to do it is to drain all the coolant, refill with water, get up to temp, drain again, repeat as necessary to get the old stuff out and then fill with the proper coolant in the proper ratio with distilled water. I also doubt that it makes much difference as for the most part coolants mix ok.
There is no way the capacity is only two gallons. If the coolant appears to be the correct color, I would not worry about it much.
There is no way the capacity is only two gallons. If the coolant appears to be the correct color, I would not worry about it much.