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2005 MGM - Where's the Coolant!!

4 messages,  Last post on Feb 26, 2013 at 9:59 PM

You are in the Ford Crown Victoria/Mercury Grand Marquis Forum.

What is this discussion about? Mercury Grand Marquis, Heating / Cooling

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#1 of 4 2005 MGM - Where's the Coolant!! by g45

Feb 13, 2012 (10:56 am)

Wanted to change coolant on my 2005 Mercury Grand Marquis. Cooling system capacity is supposed to be 13.6 quarts. System was full up to the line with the old coolant.
 
Drained old coolant into clean container. It ran out smooth and fast . . very little debris. Everything looked good. But after I drained out six quarts of coolant there was no more. What happened to the other six+ quarts of coolant???
 
Instead of using my new coolant, I put back the old coolant and warmed up the engine just to be certain. The coolant level was, once again, right up to the line on the overflow tank.
 
I can't figure out how to drain the other six quarts of coolant. I realize a quart or two will remain undrainable due to the heater, etc.. But six quarts??!!
 
Or is the cooling system capacity of this car not really 13.6 quarts?? That would explain my dilemma.

#2 of 4 Re: 2005 MGM - Where's the Coolant!! [g45] by euphonium

Feb 13, 2012 (12:32 pm)

Replying to: g45 (Feb 13, 2012 10:56 am)
Did you pop open the radiator cap during the draining?

#3 of 4 Re: 2005 MGM - Where's the Coolant!! [euphonium] by g45

Feb 13, 2012 (7:53 pm)

Replying to: euphonium (Feb 13, 2012 12:32 pm)
Thank you for the question. I should have put this in the OP.
 
Yes, the radiator cap, actually the overflow tank pressure cap, was off and set aside during the entire operation.

#4 of 4 Re: 2005 MGM - Where's the Coolant!! [g45] by mreinsmith

Feb 26, 2013 (9:59 pm)

Replying to: g45 (Feb 13, 2012 10:56 am)
a lot of your coolant will remain in the engine block and it's not unusual to have 1-2 gallons in the engine block to get it all out you have to get your cooling system flushed

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