Radiator Overflow bottle/ never full
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Senior User
Joined: Aug 2010
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From: Sound Beach L.I. N.Y
Radiator Overflow bottle/ never full
This has bugged me for a while, but since the thing runs cool its never been a concern. Since I'm working hard to get the truck ready for summer fun, I'm looking at everything. With that, the damn bottle is never full to the hot or cold mark after a lot of running. I fill it up and it never seems to all come back. I don't see any leaks, no sign of head gasket problem, never over heats. Anybody experience this ??
i ain't rite
Joined: Mar 2005
Posts: 65,492
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From: Marlboro Mental Hospital.
i do not put any faith in those silly plastic overflow bottles that always leak. the one in my 88 has been empty for the past 25 years and well over 400,000 miles.
as long as the radiator is full, that is all that counts.
as long as the radiator is full, that is all that counts.
Hotshot
Joined: Dec 2005
Posts: 10,248
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From: Chino Valley, Arizona
The '97 is a degas bottle (part of the cooling system) not an overflow bottle.
Hotshot
Joined: Dec 2005
Posts: 10,248
Likes: 7,668
From: Chino Valley, Arizona
This has bugged me for a while, but since the thing runs cool its never been a concern. Since I'm working hard to get the truck ready for summer fun, I'm looking at everything. With that, the damn bottle is never full to the hot or cold mark after a lot of running. I fill it up and it never seems to all come back. I don't see any leaks, no sign of head gasket problem, never over heats. Anybody experience this ??
if you have no known leaks I would start with a pressure test, let it sit over night with the pressure tester on it. if nothing I would suspect the cap isn't holding pressure.
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Senior User
Joined: Aug 2010
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From: Sound Beach L.I. N.Y
my '97 takes several top offs after cooling system maintenance to get it to stay at the full mark. but once it is there it is fine.
if you have no known leaks I would start with a pressure test, let it sit over night with the pressure tester on it. if nothing I would suspect the cap isn't holding pressure.
if you have no known leaks I would start with a pressure test, let it sit over night with the pressure tester on it. if nothing I would suspect the cap isn't holding pressure.
Hotshot
Joined: Dec 2005
Posts: 10,248
Likes: 7,668
From: Chino Valley, Arizona
filled through the degas bottle
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