Adding water?
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Senior User
Joined: Jun 2003
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From: Cumming, GA
Adding water?
Hey guys,
I recently did some minor engine work on my 93 F-150 and drained the coolant. When I added more, dad told me to just put straight antifreeze into the system, and I didn't think anything of it. Then a friend of mine said that water needs to be mixed in with the antifreeze, and sure enough, the back of the antifreeze bottle says it should be a 50/50 mixture.
I realize this is a basic question, but should I drain some coolant and add water? Is it really crucial that water be mixed with the antifreeze? My truck rarely sits in traffic and never overheats. Thanks.
I recently did some minor engine work on my 93 F-150 and drained the coolant. When I added more, dad told me to just put straight antifreeze into the system, and I didn't think anything of it. Then a friend of mine said that water needs to be mixed in with the antifreeze, and sure enough, the back of the antifreeze bottle says it should be a 50/50 mixture.
I realize this is a basic question, but should I drain some coolant and add water? Is it really crucial that water be mixed with the antifreeze? My truck rarely sits in traffic and never overheats. Thanks.
More Turbo
Joined: Mar 2002
Posts: 606
Likes: 3
From: Colstrip, MT
By adding straight antifreeze, you have effectively reduced the boiling temperature of the solution. A pure antifreeze solution has a freeze point of -10 deg F, while a 60/40 mix of antifreeze has a freeze point of about -50 deg F(don't remember the exact figure). Something else to consider is the concentration of corrosion inhibitor( too much of the corrosion inhibitor in a system can actually raise the pH of the solution, which causes instead of inhibits corrosion.)
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