Parts for your 2024 Mitsubishi Eclipse cross-Coolant

2024 Mitsubishi Eclipse Cross Coolant

Coolant is absolutely relevant and used on the 2024 Mitsubishi Eclipse Cross. Manufacturer technical information — including the owner’s manual and service schedule for both the 1.5‑litre turbo petrol and the Eclipse Cross Plug‑in Hybrid (PHEV) — specifies liquid engine coolant, with the PHEV also running dedicated coolant circuits for its electric drive components.

This coolant does a lot more than stop the engine from overheating on a hot Aussie or Kiwi day. It circulates through the engine and radiator to keep temperatures in the sweet spot, prevents freezing in alpine conditions, resists corrosion inside alloy components, and even lubricates the water pump. Stable coolant temperature helps the turbo operate efficiently and keeps the cabin heater working properly in winter.

For servicing, the smart move is to follow Mitsubishi’s specified long‑life, ethylene‑glycol based coolant that matches the exact chemistry in the owner’s manual. Mixing different coolant types or colours can dilute corrosion protection and shorten service life, so sticking with the correct spec is key. The reservoir should be checked only when the engine is cold, and the level kept between the LOW and FULL marks. If a top‑up is needed, use the same spec premix or a 50/50 mix made with demineralised water.

Typical replacement timing on modern Mitsubishi models is long — often up to 10 years/200,000 km for the first change, then around every 5 years/100,000 km thereafter — but always go by the service booklet for the exact variant and conditions. The PHEV has additional cooling circuits for the power electronics and drive units, these should be serviced by trained technicians due to specific bleeding procedures and high‑voltage safety requirements.

During a scheduled service, a proper coolant job isn’t just a drain and fill. It should include a system pressure test, inspection of hoses, clamps and the radiator cap, checks around the water pump and thermostat, and a correct bleed to remove air pockets. Red flags that warrant attention include repeated low levels, visible leaks, rusty or sludgy coolant, a sweet smell in the engine bay, poor cabin heat, or any hint of overheating. And of course, the radiator cap should never be opened when hot.

• Use the exact coolant spec in the owner’s manual, don’t mix types.
• Check levels cold, top up with premix or 50/50 using demineralised water.
• Follow the service interval for the petrol or PHEV variant, seek dealer service for PHEV cooling circuits.

Popular questions

What coolant type does the 2024 Eclipse Cross use?
Mitsubishi specifies a long‑life, ethylene‑glycol coolant that meets the manufacturer’s requirements. The safest option is Mitsubishi Genuine Long Life/Super Long Life coolant or an equivalent that matches the chemistry in the owner’s manual. Don’t mix different coolant types or colours. PHEV models use the same chemistry across their separate coolant circuits.

How often should coolant be replaced on a 2024 Eclipse Cross?
Many models run long intervals — commonly up to 10 years/200,000 km initially, then about every 5 years/100,000 km. Always confirm the exact interval in the service schedule for the specific variant and local conditions, especially if the vehicle tows, sees frequent short trips, or operates in extreme temperatures.

Where is the coolant reservoir, and how is it checked?
The translucent expansion tank sits in the engine bay and has LOW and FULL markings. Check it only when the engine is cold. If levels drop repeatedly, have the system inspected for leaks. PHEV versions may have additional reservoirs for the electric drive system, typically located near the front of the bay.