Quick answer
Best coolant for Chevy & GM: for Chevy, GMC, Buick and Cadillac, the safest buy is the coolant the manual calls for. Genuine option: ACDelco All Seasons Coolant (Australia/NZ). We found 23 aftermarket products with a stated Chevy & GM code and 5 that mention Chevy & GM without one (17 checked buying links).
Our pick: GM / Chevrolet genuine coolant
ACDelco GM Original Equipment Dex-Cool 50/50 Pre-Mix Engine Coolant · Premix 50/50
The maker's own coolant. Use it if your owner's manual calls for it; some models and years use a different coolant.
Check price on AmazonAll buying optionsAs an Amazon Associate I earn from qualifying purchases. Commissions never change which products we list or what the data says.
Key takeaways
- For most Chevrolet, GMC, Buick and Cadillac models the manual asks for DEX-COOL meeting GM Standard GMW3420, mixed 50/50 with clean, drinkable water.
- Genuine: ACDelco All Seasons Coolant (Australia/NZ).
- 23 aftermarket products list a Chevy & GM code.
- Not a performance ranking. Amazon links are affiliate links.
What Chevy & GM specifies
For most Chevrolet, GMC, Buick and Cadillac models the manual asks for DEX-COOL meeting GM Standard GMW3420, mixed 50/50 with clean, drinkable water [2]. GMW 3420 superseded the older GM 6277M code, so a bottle listing either is in the Dex-Cool family [4]. GM's own ACDelco Dex-Cool is orange and carboxylate-based [3]. Older GM vehicles with green coolant used other codes.
| Product | Form | Status | Buy |
|---|---|---|---|
| ACDelco All Seasons Coolant (Australia/NZ) ACDelco · OAT | Concentrate | Vehicle maker's own coolant | Buying options |
| ACDelco Blue OEM G-30 Coolant (Australia/NZ) ACDelco · OAT | Concentrate | Vehicle maker's own coolant | Buying options |
| ACDelco Red OEM G-40 Coolant (Australia/NZ) ACDelco · Si-OAT | Concentrate | Vehicle maker's own coolant | Buying options |
| ACDelco Green OEM G-48 Coolant (Australia/NZ) ACDelco · HOAT | Concentrate | Vehicle maker's own coolant | Buying options |
| ACDelco Purple OEM G-65 Coolant (Australia/NZ) ACDelco · P-Si-OAT | Concentrate | Vehicle maker's own coolant | Buying options |
| ACDelco DEX-COOL Extended Life Coolant (Australia/NZ) ACDelco · OAT | Concentrate | Vehicle maker's own coolant | Buying options |
| ACDelco GM Original Equipment Dex-Cool 50/50 Pre-Mix Engine Coolant ACDelco · OAT | Premix 50/50 | Vehicle maker's own coolant | Check price on Amazon |
Aftermarket Chevy & GM-code coolants (23)
11 more in Find my car coolant.
Weaker matches: products that only name Chevy & GM
| Product | Form | Why it is listed | Buy |
|---|---|---|---|
| Prestone Dex-Cool Antifreeze + Coolant Prestone · not published | Premix 50/50 | Names Chevy & GM | Check price on Amazon |
| Prestone Prime DEX-COOL Compatible Orange Antifreeze + Coolant Prestone · OAT | not published | Names Chevy & GM | Check price on Amazon |
| HD EXPERT PREMIUM Antifreeze/Coolant Recochem · not published | Concentrate and Premix 50/50 | Names Chevy & GM | Buying options |
| HD Expert EXTREME Antifreeze/Coolant Recochem · OAT | Concentrate and Premix 50/50 | Names Chevy & GM | Buying options |
| Reco-Cool Glyco-Cool Long Life OAT Recochem · OAT | not published | Names Chevy & GM | Buying options |
Next steps
Changing brands? Read can you mix coolant? first, and size a refill with the mix calculator. Full background, with each era of GM / Chevrolet coolant: GM / Chevrolet coolant guide. Also see Jeep, Ram & Dodge and Hyundai & Kia.
As an Amazon Associate I earn from qualifying purchases. Commissions never change which products we list or what the data says.
Frequently asked questions
Is Dex-Cool the only coolant for a Chevy?
Recent Chevrolet manuals specify DEX-COOL to GMW3420. Aftermarket products that list GMW 3420 or GM 6277M claim to meet the same standard.
Can I put green coolant in a Chevy that uses Dex-Cool?
Mixing different chemistries is not recommended. Use the code in your manual and see our coolant mixing guide.
Ready to buy?
ACDelco GM Original Equipment Dex-Cool 50/50 Pre-Mix Engine Coolant · Premix 50/50. Check that your owner's manual calls for it.
Check price on AmazonAll buying optionsAs an Amazon Associate I earn from qualifying purchases. Commissions never change which products we list or what the data says.