64R Posted June 8, 2012 Share Posted June 8, 2012 How much coolant does a 425 take? Just rebuilt the motor and started filling the rad, I have 4 gallons in there and it isn't quite full, let alone firing the motor and getting it filled up. I guess it's been a while since I filled a bone dry rad but I'm quite surprised at how much it takes, and no it isn't just pouring out the bottom Link to comment Share on other sites More sharing options...
Jim Cannon Posted June 8, 2012 Share Posted June 8, 2012 Depends on the size of the radiator. Look in Owners Manual or Shop Manual. They usually give it in quarts. You have 16 qts. in there now. Link to comment Share on other sites More sharing options...
CheezeMan Posted June 9, 2012 Share Posted June 9, 2012 The manual says 18.5 quarts cooling system capacity (with heater), so probably not dropping any on the ground yet. Link to comment Share on other sites More sharing options...
64R Posted June 11, 2012 Author Share Posted June 11, 2012 Thanks guys, looks like another half gallon to go after it circulates.Cheers Link to comment Share on other sites More sharing options...
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