How much coolant do I add?

2CP-ARCHIVES

MEMBER
1997 MERCURY MARQUIS
V8
2WD
AUTOMATIC
48,000 MILES

1997 Mercury Grand Marquis 4.6 liter mileage: 48,000. When replacing the engine coolant as suggested by the owners manual at 48,000 miles, I simply drain the old coolant from the bottom plug from the radiator then add new coolant into radiator. How much coolant and how much water should I add?

Friday, November 19th, 2010 AT 7:24 PM

2 Replies

2CP-ARCHIVES

MEMBER
4,540 POSTS

Hello,

Here is a guide and a video to help you see how the job is done:

https://www.2carpros.com/articles/coolant-flush-and-refill-all-cars

and

https://youtu.be/2q5oXh4AD_I

Please let us know if you need anything else to get the problem fixed.

Cheers, Ken

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Friday, November 19th, 2010 AT 7:26 PM

KASEKENNY

MECHANIC
18,907 POSTS

In addition to the links above here are the instructions from the manual that will help with this. There is no spec on how much you will need to add back in as they are not sure how much will actually drain out of the engine when you are draining just the radiator so they basically tell you to fill the radiator back up and then run the engine until it is hot and keep the radiator topped off.

Here is a guide that will help on a similar Ford engine:

https://www.youtube.com/watch?v=RqwSwqI9bFw

Let us know if you have other questions. Thanks

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