The 2016 Kia Forte requires a HOAT (Hybrid Organic Acid Technology) ethylene glycol-based long‑life coolant. Use Kia Genuine Long-Life Coolant or an equivalent HOAT coolant that meets Hyundai/Kia specifications, typically mixed 50/50 with distilled water. Do not use Dex-Cool or non-HOAT formulas unless explicitly approved by Kia for your engine.
Specification and compatibility
For the Forte, Kia specifies a long‑life coolant designed for Hyundai/Kia engines. This is an ethylene glycol–based coolant formulated as HOAT, which is generally available premixed in a 50/50 ratio with distilled water. The common color for these Kia/Hyndai HOAT coolants is pink or red, but color is not a definitive indicator—always rely on the specification on the label and the owner's manual.
HOAT vs. other coolant technologies
HOAT stands for Hybrid Organic Acid Technology. It blends organic acids with a small amount of inorganic acids to protect aluminum engines and radiator materials while providing long‑life protection. For Kia/Hyundai vehicles, HOAT formulations are typically recommended, and silicate-free variants are common. Do not substitute with OAT-only (organic acid) formulas unless Kia specifies compatibility for your exact model and engine.
Kia Genuine coolant versus aftermarket equivalents
Kia’s official recommendation is to use Kia Genuine Long-Life Coolant, but many aftermarket HOAT coolants that meet ASTM D3306 and SAE J1941 and are silicate-free can be acceptable. Always check the product label for compatibility with Hyundai/Kia engines and avoid formulas not listed as HOAT or not approved for Kia vehicles. If in doubt, consult a Kia dealer or qualified mechanic.
Guidance for top-ups and replacement
To help you choose the right coolant for the Forte, follow these guidelines:
- Use a HOAT ethylene glycol–based coolant that meets ASTM D3306 and SAE J1941 and is silicate-free.
- Prefer Kia Genuine Long-Life Coolant, or an equivalent HOAT coolant specifically stated as compatible with Hyundai/Kia engines.
- Use a 50/50 premixed coolant or mix concentrate with distilled water to achieve a 50% concentration.
- Avoid Dex-Cool (GM) or other OAT-only formulas unless Kia explicitly approves them for your engine.
These guidelines help ensure proper cooling system protection and maintain warranty eligibility. If you’re unsure, consult a dealer or ASE-certified technician before purchasing or mixing coolant.
Steps for replacing or topping up coolant
If you plan to replace coolant or perform a top-up, follow these procedural steps carefully:
- Ensure the engine is cool and the vehicle is on a level surface. Open the hood and locate the radiator cap and coolant reservoir.
- Position a drain pan underneath the radiator drain plug (or the lower radiator hose connection) and carefully open the drain to allow old coolant to drain completely.
- Flush the cooling system if you suspect contamination or if you’re performing a full replacement, then close the drain plug.
- Prepare the new coolant: use Kia Genuine Long-Life Coolant or a suitable HOAT coolant that meets D3306/SAE J1941. If using concentrate, mix with distilled water to achieve 50/50 concentration.
- Refill the radiator and reservoir with the prepared 50/50 coolant mixture. Reinstall the radiator cap securely.
- Start the engine with the heater on high and allow it to reach operating temperature, then check for leaks and add coolant as needed to bring levels to the full marks.
After completing the procedure, dispose of the old coolant properly and monitor the level over the next few days to ensure the system is fully bled and topped off. If you’re not comfortable performing these steps, have a qualified technician handle the service.
Summary
The 2016 Kia Forte uses a HOAT ethanol glycol–based long‑life coolant. Use Kia Genuine Long-Life Coolant or a compatible HOAT coolant that meets industry standards (D3306/SAE J1941) and mix to a 50/50 ratio with distilled water. Avoid non-HOAT or Dex-Cool formulations unless explicitly approved by Kia. For maintenance, follow the owner's manual and consult a professional if in doubt.