04-20-2019, 02:50 PM | #1 |
Drives: 2017 ZL1 Join Date: Dec 2009
Location: NYC
Posts: 1,165
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Need a little
Not sure if I am posting in the right section. I just had headers and catback exhaust installed along with a tune. For some reason the coolant overtank will not go down. I know when the car is running the tank in filled and lower when car is off or cooled down. Pic was taken after the car cooled overnight. No over heating or anything. Any ideas, thanks in advance.
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Elite Design Concepts NY5THGEN2017 ZL1 Garnet Red/M6/// IG @Crazl1
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04-20-2019, 04:14 PM | #2 |
Drives: 2017 Camaro ZL1 Coupe Join Date: May 2016
Location: Georgia
Posts: 5,849
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Looks fine to me seddon! As long as coolant is in the bottom tank and you aren’t having any overheating issues, it should be good. Maybe some others will chime in but looks okay to me.
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ZL1 Coupe, PDR, Exposed carbon fiber hood insert, My Link with Nav, M6 6 speed and Silver Ice Metallic. Mods done: ceramic window tint, GM Accessories Camaro floor mats and Roto-Fab CAI.
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04-21-2019, 04:42 AM | #3 |
Drives: 2017 ZL1 - Hyper Blue Join Date: Mar 2015
Location: US
Posts: 71
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Mine has always looked the same. Top tank is full
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04-21-2019, 06:31 AM | #4 |
Kevin
Drives: 2018 Callaway Camaro ZL1 1LE Join Date: Apr 2018
Location: Rattlesnake, FL
Posts: 321
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Upper coolant tank should always be full. Lower tank level will fluctuate. From owners manual:
Fill the surge tank top chamber with the proper mixture to the bottom of the fill neck. The top chamber needs to be completely full. Fill the surge tank bottom chamber through the service port to approximately half. Yours looks perfect! |
04-22-2019, 03:51 PM | #5 | |
Drives: 2017 ZL1 Join Date: Dec 2009
Location: NYC
Posts: 1,165
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Quote:
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Elite Design Concepts NY5THGEN2017 ZL1 Garnet Red/M6/// IG @Crazl1
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04-22-2019, 07:22 PM | #6 |
Drives: 2017 Camaro ZL1 Coupe Join Date: May 2016
Location: Georgia
Posts: 5,849
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Seddon, your Z is good to go. No worries!
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ZL1 Coupe, PDR, Exposed carbon fiber hood insert, My Link with Nav, M6 6 speed and Silver Ice Metallic. Mods done: ceramic window tint, GM Accessories Camaro floor mats and Roto-Fab CAI.
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04-23-2019, 06:27 AM | #7 |
Kevin
Drives: 2018 Callaway Camaro ZL1 1LE Join Date: Apr 2018
Location: Rattlesnake, FL
Posts: 321
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04-23-2019, 06:52 AM | #8 |
Drives: 2017 50th Anniversary 2SS Join Date: Sep 2016
Location: Jacksonville, FL
Posts: 930
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FWIW. I never knew what that lower tank was for and when I removed the coolant reservoir for a header install, I never filled the lower tank up at all. I did notice however that when my engine was warm from driving the coolant in the upper tank was completely full and when it cooled down the level would drop in the upper tank to about the fill line. I assumed this was normal operation until one day on here someone brought up a topic about the lower tank and how the manual states it should be half full. Ever since filling that half full my upper tank is always completely full no matter if the engine is hot, warm or cold overnight.
I suspect it's just an expansion tank and will draw in or push out fluid from the lower as needed to keep the top full 100% of the time.
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04-23-2019, 07:14 AM | #9 | |
Thank you Al Oppenheiser!
Drives: Red Hot A10 ZL1 Convertible Join Date: Jun 2017
Location: Sarasota, FL
Posts: 5,043
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Quote:
Great design from an engineering standpoint to ensure there's no air in the loop, but horrible from a owner/maintenance standpoint. This manual page shows the purge procedure as well as a good graphic of what the two tanks should look like under normal conditions (hot or cold). |
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04-24-2019, 05:55 AM | #10 |
Drives: 2017 ZL1 Join Date: Dec 2009
Location: NYC
Posts: 1,165
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Thanks fellas sometimes i get paranoid, i guess its my ocd.
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Elite Design Concepts NY5THGEN2017 ZL1 Garnet Red/M6/// IG @Crazl1
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04-24-2019, 11:03 AM | #11 |
Kevin
Drives: 2018 Callaway Camaro ZL1 1LE Join Date: Apr 2018
Location: Rattlesnake, FL
Posts: 321
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Never hurts to ask man.
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04-24-2019, 01:02 PM | #12 |
Drives: 2017 Camaro ZL1 Coupe Join Date: May 2016
Location: Georgia
Posts: 5,849
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Glad we could help you seddon.
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ZL1 Coupe, PDR, Exposed carbon fiber hood insert, My Link with Nav, M6 6 speed and Silver Ice Metallic. Mods done: ceramic window tint, GM Accessories Camaro floor mats and Roto-Fab CAI.
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04-24-2019, 03:33 PM | #13 |
Drives: 2016 Challenger Hellcat, 2018 ZL1LE Join Date: Dec 2009
Location: Northern NJ
Posts: 3,003
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this is a great thread !!! never be afraid to ask questions man, it helps the rest of us who might have similar concerns.
By the way, I think all of us here suffer from OCD lolol.
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