Parts for your 2018 Nissan Serena-Coolant

2018 Nissan Serena coolant — what it does and when to change it

Coolant is absolutely relevant and used on the 2018 Nissan Serena. Technical sources including the Nissan Serena C27 Service Manual (Cooling System section) and the 2018 Owner’s Manual specify liquid cooling for the MR20DD petrol engine, and on e-POWER models there are dedicated coolant circuits for the engine-generator and the power electronics/motor. Nissan calls for its ethylene‑glycol based, long‑life coolant (often referred to as Nissan Genuine Long Life Antifreeze/Coolant Blue).

In this Serena, coolant circulates through the engine and radiator to control temperature, prevent boiling in summer, and stop freezing in alpine conditions. It also carries corrosion inhibitors that protect the alloy block, radiator, heater core, water pump and gaskets from scale and rust, and it lubricates the water pump seal. On e-POWER variants, the coolant also manages heat in the inverter and drive motor to keep performance consistent and protect high‑value components.

• Regulates engine and hybrid system temperatures for efficiency and longevity
• Protects against internal corrosion and electrolysis
• Raises boiling point and lowers freezing point for all‑season reliability

For servicing a 2018 Serena, the sensible move is to stick with Nissan Genuine Long Life Coolant (Blue) or an equivalent that explicitly meets Nissan’s spec. Don’t mix coolant types or colours, if the history is unknown, a complete drain and refill is safer than topping up. If a top‑up is unavoidable, use the correct premix, demineralised water is a short‑term emergency option only.

Intervals vary by market and usage, but Nissan’s long‑life blue coolant typically runs a lengthy first service interval (often up to around 160,000 km or 7–10 years), then shorter subsequent intervals (commonly around 5 years/100,000 km). Follow the maintenance schedule in the Owner’s Manual for your VIN and conditions. Check level and condition at every service, coolant that looks rusty, murky, oily, or smells burnt needs attention.

• Always open the cap only when the engine is cold and depressurised
• Bleed air properly after a drain/fill, a vacuum fill tool helps avoid air locks
• Inspect hoses, clamps, radiator, thermostat and cap, replace any tired parts
• Dispose of old coolant responsibly, it’s toxic to pets and the environment

Note for e-POWER models: the high‑voltage cooling loop for power electronics should be serviced exactly to Nissan procedures. If unsure, leave hybrid‑system cooling work to trained technicians.

Technical references: Nissan Serena C27 Service Manual (Cooling System – CO, Engine, Hybrid/e-POWER cooling sections) and the 2018 Nissan Serena Owner’s Manual, Nissan Genuine Long Life Antifreeze/Coolant (Blue) product specification.

Popular questions

What coolant type does a 2018 Nissan Serena use?
Nissan specifies a long‑life, ethylene‑glycol coolant, commonly Nissan Genuine Long Life Antifreeze/Coolant (Blue). It’s a premixed, silicate‑free formula designed for alloy engines and modern cooling systems. Using the genuine or an exact‑spec equivalent helps maintain corrosion protection and long service intervals.

How often should coolant be replaced on a 2018 Serena?
Follow the Owner’s Manual for your market. As a guide, the first change on Nissan’s blue long‑life coolant is often around 160,000 km or up to 7–10 years, with subsequent changes about every 5 years/100,000 km. Check condition annually, especially if towing, driving in hot climates, or doing lots of short trips.

Can the inverter/motor coolant on e-POWER be serviced at home?
It’s technically similar to engine coolant, but the e-POWER loop is tied to high‑voltage components. DIY top‑ups on a cold system are possible with the correct coolant, but bleeding procedures and safety around HV components are critical. If there’s any doubt, leave it to a hybrid‑qualified technician.