What kind of coolant does a Toyota Prius use?
The Prius typically uses Toyota Genuine Long Life Coolant (LLC) or Toyota Genuine Super Long Life Coolant (SLLC), both ethylene glycol–based. They are commonly sold premixed in a 50/50 solution, and you should use the coolant type specified in your owner’s manual. Mixing different coolant types can cause cooling system problems.
This article explains the two main Toyota-approved options and how to choose and use them correctly for Prius maintenance, including when and how to refill the cooling system. It also covers basic handling and safety considerations to keep the system functioning properly.
Two main coolant options endorsed by Toyota
The Prius uses one of two Toyota-approved coolant families. Both LLC and SLLC are designed to meet Toyota’s specifications for hybrid systems, and both are typically available in premixed 50/50 formulations (some markets offer concentrates that must be diluted). Always confirm the exact specification for your vehicle in the owner’s manual or by speaking with a Toyota dealer.
- Toyota Genuine Long Life Coolant (LLC) – a long-life, ethylene glycol–based coolant used in many Toyota vehicles, including older Prius models.
- Toyota Genuine Super Long Life Coolant (SLLC) – a newer, higher-durability option designed for extended service intervals on modern Toyotas.
When replacing coolant, use only the Toyota-approved product that matches your vehicle’s specification. Do not mix LLC with SLLC or use non-Toyota coolants unless explicitly rated as compatible by Toyota. If you’re unsure, consult a dealer or qualified mechanic.
Maintenance and handling tips
Proper handling and adherence to the right specification are essential for the Prius cooling system. Below is a quick checklist of practical considerations when servicing coolant.
- Ensure the engine is cool before opening the cooling system to avoid scalding injuries.
- Use the correct coolant type (LLC or SLLC) as specified for your model year, and do not mix different formulations.
- If using concentrate, dilute to the recommended 50/50 premix as indicated on the product label.
- Bleed the cooling system after filling to remove air pockets and prevent overheating or poor circulation.
- Dispose of old coolant at an approved recycling facility and never pour it down drains or onto the ground.
For ongoing maintenance, refer to the owner’s manual for the recommended service interval and procedures. When in doubt, seek service from an authorized Toyota service center.
Summary
In short, a Toyota Prius uses either Toyota Genuine Long Life Coolant (LLC) or Toyota Genuine Super Long Life Coolant (SLLC). Both are ethylene glycol–based and typically available as premixed 50/50 formulations. Always use the coolant type specified for your vehicle, avoid mixing formulations, and follow the manual or consult a dealer for model-year specifics. Proper handling and disposal are essential for safe, effective cooling-system maintenance.
Can I just add coolant to my Prius?
To add the coolant, just unscrew the cap of the opaque overflow reservoir and add the mixture until it reaches the full mark. After that, all you need to do is replace the cap, make sure that it is on tight, and you're ready to roll!
Do hybrids need special coolant?
Hybrid vehicles are unique, calling for an antifreeze/coolant that goes above and beyond to maintain optimal system performance. Zerex Hybrid Antifreeze/Coolant is a game-changer. Because hybrids have enhanced battery and electrical components, there's an increased burden placed on the vehicle cooling system.
What kind of coolant does a 2018 Prius take?
Orange fluid. Extended life 50/50 prediluted DexCool antifreeze coolant.
Do Toyotas need special coolant?
Yes, Toyota uses specific, often proprietary, antifreeze formulas, including a pink Super Long Life Coolant for most models made after 2004 and a red Long Life Coolant for older or different models. It is crucial to use the correct type for your specific Toyota to ensure proper engine protection.
Different Toyota antifreezes
- Pink (Super Long Life Coolant): This is the coolant for most modern Toyotas and uses a hybrid organic acid technology. It is designed for longer service intervals.
- Red (Long Life Coolant): Used in older models, this coolant uses an inorganic acid technology and requires more frequent replacement.
- Blue (Super Long Life Coolant): Used for certain Toyota models that share a Subaru boxer engine, like the 86 or BRZ.
- Green (Frostox HT-12): Used in Toyota models that share a BMW engine.
How to choose the right coolant
- Check your owner's manual: This is the most reliable source for the specific type of coolant your vehicle requires.
- Look at the coolant color in your reservoir: If the color is currently pink, you can likely use more pink coolant. If it's red, use more red. However, never mix different colors, as they may have different chemical compositions.
- Consult a professional: If you are unsure, a Toyota dealership service department can tell you the correct coolant for your car.
