Is This Normal?
Team Owner
Joined: Sep 2000
Posts: 25,007
Likes: 2,707
From: Far NW 'burbs of Chicago
St. Jude Donor '13
Bingo ..... if it's never done it before and it has not been topped off lately then the cap is not holding preasure .... which if left will eventually cause it to run hot as the coolant needs to be under pressure, running just a bit hotter than normal , almost undectable leads to the "puking" that you are seeing
Dave
Dave
But at some point the lack of pressure in the tank will allow the coolant to boil, either during normal driving, shortly after shutting down, or when the coolant gets hot from hard driving. Then, serious overheating could come on quickly.
I think that makes sense, but no guarantee...
Team Owner
Joined: Jul 2004
Posts: 28,431
Likes: 3,284
From: Hartford WI
I'm thinking that initially the engine will not run hot, the thermostat will still open/close to keep the specified temp regardless of tank pressure.
But at some point the lack of pressure in the tank will allow the coolant to boil, either during normal driving, shortly after shutting down, or when the coolant gets hot from hard driving. Then, serious overheating could come on quickly.
I think that makes sense, but no guarantee...
But at some point the lack of pressure in the tank will allow the coolant to boil, either during normal driving, shortly after shutting down, or when the coolant gets hot from hard driving. Then, serious overheating could come on quickly.
I think that makes sense, but no guarantee...
Thread Starter
Instructor
Joined: Feb 2021
Posts: 180
Likes: 41
From: Phoenix, Az
Well, nothing else has dripped out of the overflow tube, temperature is as normal as ever and a pressure test revealed no leaks.
Don't know if the new cap helped but it didn’t hurt, especially at $10.
Don't know if the new cap helped but it didn’t hurt, especially at $10.
Thread Starter
Instructor
Joined: Feb 2021
Posts: 180
Likes: 41
From: Phoenix, Az
Team Owner
Joined: Sep 2010
Posts: 32,042
Likes: 4,610
My (bought new) 10K miles, 2017 Stingray base's expansion bottle is low, I've noticed. Don't recall if it was full years ago. The liquid is Yellow color in there. Wonder if I can buy this coolant if specially prescribed, @ Walmart or AutoZone??
Thread Starter
Instructor
Joined: Feb 2021
Posts: 180
Likes: 41
From: Phoenix, Az
Mine is filled with Dex-Cool and it’s orange. You can buy it anywhere. When did you last change yours?
Pro
Joined: Sep 2015
Posts: 558
Likes: 245
From: SW Kansas
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Team Owner
Joined: Jul 2004
Posts: 28,431
Likes: 3,284
From: Hartford WI
I never buy the generic coolant that is "one size fits all" but any auto parts store should have Dexcool.