Topping up coolant

zx9rmal · 07-30-2024, 07:27 AM

I’m about a pint low in the lower chamber. Rather than buy a gallon of coolant, is it ok to use distilled water? Thanks.

2023_ZL1-AUTO · 07-30-2024, 08:44 AM

I'm no expert on this at all. But, maybe consider 12oz bottle of WaterWetter instead? Not sure I'd dilute the 50/50 Dex-cool with distilled water. Especially since your in hot temps in FL.

arpad_m · 07-30-2024, 08:48 AM

Alternatively, you can buy 50/50 premix, too. If you use that, your antifreeze to water ratio will not change at all. I typically use ACDelco 50/50 (part number 12378390), but the Prestone AF850 (50/50) is fine as well.

Slurpee · 07-30-2024, 10:43 AM

Yes that's fine for Florida if you don't want to buy a 50/50 mix.

WhiteMale · 07-30-2024, 10:52 AM

Coolant stores well and you'll need it again, just buy a 50/50 premix for GM.

Tibby ZL1 · 07-30-2024, 11:43 AM

Quote:

Originally Posted by zx9rmal

I’m about a pint low in the lower chamber. Rather than buy a gallon of coolant, is it ok to use distilled water? Thanks.

I would say that is fine.

LT4Greg · 07-30-2024, 06:35 PM

I have a gallon of Prestone 50/50 mix that I use for my ZL1 and Chevy 1500 truck. Never had any issues.

Gunkk · 07-30-2024, 09:53 PM

Quote:

Originally Posted by zx9rmal

I’m about a pint low in the lower chamber. Rather than buy a gallon of coolant, is it ok to use distilled water? Thanks.

Yes.

2SS Capt · 07-30-2024, 11:58 PM

Quote:

Originally Posted by zx9rmal

I’m about a pint low in the lower chamber. Rather than buy a gallon of coolant, is it ok to use distilled water? Thanks.

No offense, but you have a 2020 ZL1, is a gallon of premixed Dexcool (~$30?) going to set you back enough that you even need to think about it? I was a little low in my lower coolant reservoir and bought a gallon of the proper Dexcool premix and topped it up and I spent probably at least $20k less on my car than you did... Just put in the proper coolant and move on, fluids are not the place to cheap out on a $70k car... Plus I had plenty left for all my friends who needed a splash of coolant to top up their reservoirs...

07-30-2024, 07:27 AM	#1
zx9rmal Drives: '20 ZL1 M6 Join Date: Apr 2017 Location: FT. Lauderdale, FL Posts: 731	Topping up coolant I’m about a pint low in the lower chamber. Rather than buy a gallon of coolant, is it ok to use distilled water? Thanks. __________________ Mal Ft. Lauderdale, FL '20 Camaro ZL1 M6 '22 Kawasaki ZX-14R

07-30-2024, 08:44 AM	#2
2023_ZL1-AUTO Drives: 2023 ZL1 - All Bolt On's Join Date: Dec 2022 Location: Columbus, Ohio Posts: 1,188	I'm no expert on this at all. But, maybe consider 12oz bottle of WaterWetter instead? Not sure I'd dilute the 50/50 Dex-cool with distilled water. Especially since your in hot temps in FL. __________________ 2023 ZL1 A10-Stainless Works 2" Long Tubes & Legend NPP Axle Back•GESI UHO 4.5" CATs•RF BigGulp•Kong 103mm & X-Ported Blower•Griptech 2.30" Upper•ATI Super Damper w/9.45" Lower•THPSI Port Injection w/875cc Injectors•FI Interchillers Stage 2•Brisk RR14S Plugs•Granatelli Malevolent Coils•Katech Low Profile Billet Valve Covers•Katech Duel Fuel Pump•MM Wild 1000HP•DSX Flex Fuel Kit•DSX Billet Lid•DMS 2gal Fender Tank•BMR Cradle Lockout•Weld Solana 18x8 Fronts/17x10 Beadlocks MT ET ST R's•Unlocked TCM•E85=785rwhp/691rwtq +21psi \| 1/4=10.5005 @134.21 60ft=1.6182, 1/8=6.8373 @106.11

07-30-2024, 08:48 AM	#3
arpad_m Drives: 2018 Camaro 2SS A8 Join Date: Jul 2017 Location: East Tennessee Posts: 13,151 View My Garage	Alternatively, you can buy 50/50 premix, too. If you use that, your antifreeze to water ratio will not change at all. I typically use ACDelco 50/50 (part number 12378390), but the Prestone AF850 (50/50) is fine as well. __________________ 2018 Camaro 2SS — G7E MX0 NPP F55 IO6 735 rwhp \| 665 rwtq Magnuson TVS 2300 80mm pulley \| Kooks 1 7/8" LT headers \| JRE smooth idle terminator cam \| LT4 FS & injectors \| TSP forged pistons & rods JMS PowerMAX \| DSX flex fuel kit \| Roto-Fab CAI \| Soler 95mm LT5 TB \| 1LE wheels \| 1LE brakes \| BMR rear cradle lockout \| JRE custom tune 1100 - 1/30/18 \| 2000 - 1/31/18 3000 - 2/06/18 TPW 2/26/18 3400 - 2/19/18 \| 3800 - 2/26/18 4300 - 2/27/18 \| 4B00 - 3/01/18 4200 - 3/05/18 \| 4800 - 3/14/18 5000 - 3/16/18 \| 6000 - 3/19/18

07-30-2024, 10:43 AM	#4
Slurpee Drives: 2020 ZL1 A10; Shadow Gray Metallic Join Date: Sep 2020 Location: Chicago Posts: 251	Yes that's fine for Florida if you don't want to buy a 50/50 mix. __________________

07-30-2024, 06:35 PM	#7
LT4Greg Drives: 2017 Camaro ZL1 Coupe Join Date: May 2016 Location: Georgia Posts: 5,869	I have a gallon of Prestone 50/50 mix that I use for my ZL1 and Chevy 1500 truck. Never had any issues. __________________ 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.

07-30-2024, 10:52 AM	#5
WhiteMale Drives: 23 ZL1 A10 Rapid Blue Join Date: Aug 2020 Location: MO Posts: 2,243	Coolant stores well and you'll need it again, just buy a 50/50 premix for GM.

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