Can I Use GM Coolant in a Dodge?
Is GM (Dex-Cool) Coolant Safe for a Dodge Vehicle?
⚠️ No, GM Dex-Cool coolant is not recommended for Dodge vehicles unless specifically stated in your owner’s manual. Dodge vehicles typically require HOAT (Hybrid Organic Acid Technology) coolant, while GM vehicles use OAT (Organic Acid Technology) Dex-Cool. Mixing or using the wrong coolant type can lead to corrosion, sludge buildup, and cooling system damage.
Differences Between GM Dex-Cool and Dodge HOAT Coolant
Why You Shouldn’t Use GM Dex-Cool in a Dodge
⚠️ Chemical Incompatibility – HOAT and OAT coolants react differently, leading to sludge formation.
⚠️ Risk of Overheating – GM Dex-Cool may not provide the correct corrosion protection for Dodge engines.
⚠️ Warranty Issues – Using non-recommended coolant can void manufacturer warranties.
What Coolant Should You Use for a Dodge?
✅ Mopar 10-Year/150,000-Mile Coolant (HOAT, Orange or Purple) – Official Dodge recommendation.
✅ Zerex G-05 (HOAT, Yellow) – Aftermarket equivalent approved for Dodge vehicles.
✅ Universal Coolants (Check for HOAT Compatibility) – If in doubt, use a HOAT-compatible coolant.
What If I Already Mixed Dex-Cool in My Dodge?
🔹 Flush the Cooling System Immediately – Drain and refill with the correct HOAT coolant.
🔹 Check for Sludge or Gel Formation – Mixed coolants can create blockages.
🔹 Monitor Engine Temperature – Improper coolant can cause overheating and internal damage.
Final Thoughts
🚨 Do not use GM Dex-Cool in a Dodge unless specifically approved in your owner’s manual. Always stick to HOAT coolant (Mopar or Zerex G-05) to avoid corrosion, overheating, and cooling system failure.
FAQs
1. Can I use universal coolant instead of Mopar HOAT?
✅ Only if it’s labeled as HOAT-compatible—always check the bottle and owner’s manual.
2. What happens if I mix Dex-Cool and HOAT coolant?
⚠️ Sludge formation, blocked cooling passages, and possible engine overheating.
3. How often should I change coolant in a Dodge?
📆 Every 5 years or 150,000 miles (whichever comes first).
4. Can I flush out Dex-Cool and switch to HOAT?
✅ Yes, but a complete cooling system flush is required before switching.
5. Does using the wrong coolant void my warranty?
⚠️ Yes, if coolant-related damage occurs and non-recommended coolant was used.
