Friday, September 23, 2011

How much coolant to add to 350 in 63 impala?

So I changed a thrmostst in my 350 after it went bad and just added water to radiator. Now I want to flush out radiator. Can someone tell me how much coolant/anifreeze I need to add? ThanksHow much coolant to add to 350 in 63 impala?Hi,You say you are flushing out radiator,so you start from scratch. The antifreeze container will have a chart on it ,where you pick the protection you what for your area that you live in. Usually you use a 50/50 mix.You also can buy the antifreeze in a 50/50 mix and just add to radiator.Good Luck.How much coolant to add to 350 in 63 impala?Get 2 gallons, mix it 50/50. Fill it up, let it run for a minute, then add more until it quits going down.