Parts for your 2025 Mitsubishi Eclipse cross-Coolant

2025 Mitsubishi Eclipse Cross Coolant

Coolant is absolutely relevant and used on the 2025 Mitsubishi Eclipse Cross. Mitsubishi’s Owner’s Manual and Service/Warranty literature for the Eclipse Cross (including the PHEV) specify engine coolant inspection and replacement as scheduled items, and show dedicated reservoirs for both the engine and, on PHEV models, the EV/inverter cooling circuit. Mitsubishi’s Genuine Super Long Life Coolant (SLLC) specifications also confirm the required coolant type for these systems.

For this model, coolant does more than just stop the engine from overheating. It keeps temperatures steady under Aussie and Kiwi conditions, protects aluminium components and the turbo’s water jacket from corrosion, lubricates the water pump, and resists boiling and freezing. On the Eclipse Cross PHEV, there’s an additional cooling loop for the power electronics and e-motor to keep performance consistent on long climbs and in summer heat.

Servicing the Eclipse Cross coolant is straightforward but worth doing right. The team will always check the level stone-cold, inspect hoses and clamps under the bonnet, test the radiator cap, and look for telltales like a sweet smell, chalky residue, or staining that can point to a minor leak. If replacement is due per the maintenance schedule, they’ll drain and refill with Mitsubishi-specified long-life coolant and properly bleed the system (PHEV models may require a service-mode bleed for the electric pumps).

Mitsubishi specifies a long-life, silicate-free, phosphate OAT (often blue-coloured) coolant. Mixing types isn’t advised—stick with Mitsubishi Genuine SLLC or an equivalent meeting the same spec. If using concentrate, only demineralised water should be added. Most workshop fills are pre-mix at the correct ratio for year-round protection.

Daily driver or weekend tourer, the Eclipse Cross benefits from fresh, correct coolant. It helps stabilise cabin heater output, supports turbo longevity, and keeps the alloy passages clean. Follow the Owner’s Manual intervals and get it pressure-tested if you notice odd temperature swings or the cooling fans running more than usual after shutdown.

• Check coolant level when cold, never open the cap hot.
• Top up only with the same spec and colour, avoid universal blends.
• Have both engine and EV coolant circuits (PHEV) inspected on schedule.

Popular questions

What coolant does the 2025 Eclipse Cross use?
It uses a long-life, silicate-free, phosphate OAT coolant. Mitsubishi labels it as Genuine Super Long Life Coolant (often blue). Using the correct spec helps prevent corrosion in the alloy block, turbo, radiator, and heater core. If topping up, match the same type and colour and avoid mixing brands or chemistries.

How often should the coolant be changed?
The change interval is listed in the Owner’s Manual and Service/Warranty booklet. Mitsubishi long-life coolants typically have extended first-service intervals, then shorter subsequent intervals. Local conditions (towing, high ambient temps, dusty driving) may justify earlier testing and replacement.

Does the Eclipse Cross PHEV have separate coolant?
Yes. There’s coolant for the engine and a separate circuit for the EV power electronics/e-motor. Both circuits require correct fluid and proper bleeding procedures. A dealer or trained technician will use service-mode features to purge air from the EV loop.