Coolant question
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Junior User
Joined: May 2004
Posts: 85
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From: TEXAS
Coolant question
So I requested the records from the dealership where I bought my used 2008 F3 50 lariat, the records indicate the service they did on the truck when they took it in on trade in, one of the things that they did was flush the cooling system and replace fluids, They also replaced upper and lower radiator hoses, yesterday I looked at my reservoir and it is three quarters low I have only had the truck about 40 days now, where should I look for a problem? Where is the coolant going?
Cargo Master
Joined: Dec 2003
Posts: 2,022
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From: Redford, Mi.
Just like anything else, the dealer maybe didn't do due diligence and drive it after the change and top off.
Elder User
Joined: Jan 2008
Posts: 617
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From: Washington,KS/Lincoln,NE
coolant just gradually disappears in mine. I've never found it to be going anywhere other than just disappearing. Howver, if they didn't suck the new coolant in with an airlift tool, I'd suggest they left trapped air that's worked its way out.
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Super Moderator
Joined: Aug 2008
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From: Frederick, MD
I tend to think that is get so hot under the hood some evaps. Not suppose to in a closed system but that is what I think.
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Logistics Pro
Joined: Nov 2001
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From: Georgia
Since we're on the subject mine also loses around 6 ounces in around 5000 miles. I've been thinking about that and what I'm wondering is if I am adding when I should just let it be. I fill to the top line on the tank, over time it goes down to half way between the lines and at that point I've always refilled to the top. What I'm wondering is if I didn't refill would the coolant just stay at that middle of the lines level? Where is the full level supposed to be? When the truck is at running temp the level in the tank is very close to the top of the tank. It doesn't look like it would take much to run over. Just thinking.
Super Moderator
Joined: Aug 2008
Posts: 37,375
Likes: 1,860
From: Frederick, MD
Since we're on the subject mine also loses around 6 ounces in around 5000 miles. I've been thinking about that and what I'm wondering is if I am adding when I should just let it be. I fill to the top line on the tank, over time it goes down to half way between the lines and at that point I've always refilled to the top. What I'm wondering is if I didn't refill would the coolant just stay at that middle of the lines level? Where is the full level supposed to be? When the truck is at running temp the level in the tank is very close to the top of the tank. It doesn't look like it would take much to run over. Just thinking.
Also consider a hose leak. I had one going to florida two years ago. but because I had ample coolant in there I was able to catch it early enough to replenish it without running dry.
Super Moderator
Joined: Aug 2008
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From: Frederick, MD
Yes...have two gal jugs on hand. Then pre-mix your own.keep one in the truck.
Lead Driver
Joined: Jan 2006
Posts: 6,267
Likes: 5
Top rad hose o-rings come to mind.
The way the air flows around and through the truck, I've been in trucks that puked, and I couldn't smell any coolant.