how many gallons of Antifreeze do I need - F150online Forums

how many gallons of Antifreeze do I need

Old 11-06-2000, 02:05 PM
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Post how many gallons of Antifreeze do I need

How many gallons of antifreeze do I need to buy for a flush and fill? Don't want to buy more than I need.

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Old 11-06-2000, 02:48 PM
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Location: Carolina, Puerto Rico, USA
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To answer correctly it is very important to know the year and engine you have.

For 97 and 98, 2wd and 4wd 4.6 and 5.4 without a/c the cooling system needs 17.9 quarts and with a/c 19.4 quarts.

Different if it is an Expy or Navi.

I am buying today the antifreeze for a flush tomorrow. I suggest you to get a repair manual. They have all the information you need and how to do it correctly. I have the Haynes manual and it's been like a school for me.

My Ride: 1998 F150 4x4 Lariat Supercab Flareside 5.4L in Oxford White/gold, ORP, Tow Package, 3.55 Gears.

Modifications: K&N FIPK, Stepshield door sill protectors, Performance Accesories 3" body lift, Lift Lips, Gabriel Gas Ryder LT VST Shocks and Daystar front anti-sway bar polyurethane bushings.

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Old 11-06-2000, 03:27 PM
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Sorry, I forgot to give you that pertinant info. I have the '97 4.6 with a/c. I do have a manual and I knew the 19.4 quart figure. What I don't know is:

does all the antifreeze drain out?


[This message has been edited by jlaird (edited 11-07-2000).]
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Old 11-06-2000, 03:44 PM
Join Date: Sep 2000
Location: Mount Pleasant, MI
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Lord help us, quarter of a gallon. For quarts to a gallon. four goes into 20 five times. Divide 20 in half. This is how much antifreeze you should put in your radiator. The other half should be distilled water.
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