Parts for your 2020 Mitsubishi Asx-Radiator

2020 Mitsubishi ASX Radiator — purpose, care, and when to replace

Yes, the 2020 Mitsubishi ASX is fitted with a front-mounted aluminium radiator as part of its liquid-cooled MIVEC petrol engine (2.0L or 2.4L, market-dependent). This is confirmed in Mitsubishi’s technical literature: the Owner’s Manual cooling-system section, the ASX/RVR workshop manual (Cooling System — radiator, electric fan, thermostat, water pump), and the Mitsubishi genuine parts catalog, which lists the radiator assembly, cap, hoses, and fan shroud for 2020 build vehicles.

The radiator’s job is simple but vital: it sheds the engine’s heat into the airstream so temperatures stay stable under the bonnet. Coolant flows from the engine to the radiator, is cooled by airflow and electric fans, then returns to the engine. That steady temperature keeps performance sharp, lubrication effective, and emissions in check—whether it’s a summer arvo on the Hume or a steep Kiwi climb with the A/C blasting.

For servicing, the ASX benefits from regular cooling-system checks at each service: coolant level and colour, condition of the radiator core and end tanks, cap seal, and the upper/lower hoses and clamps. Use the correct long-life ethylene glycol coolant specified by Mitsubishi (often supplied pre-mixed). If using concentrate, mix with demineralised water. Many schedules target coolant replacement roughly every 4–5 years or about 100,000 km, but owners should follow the exact interval stated in the vehicle’s service schedule for their market and conditions.

When replacing the radiator or doing a full coolant service, it pays to refresh related bits at the same time: a new radiator cap, fresh hoses and clamps, and, if age or kilometres warrant it, a thermostat. Bleeding air is crucial—run the engine with the heater on hot, top up as bubbles purge, and recheck the level once cooled. Never open the cap when hot. Dispose of old coolant responsibly.

Common signs the ASX radiator or cooling system needs attention include:

• Temperature gauge creeping higher, especially in traffic or on climbs
• Low coolant level or dried pink/white residue around hose joints and end tanks
• Sweet smell, visible drips, swollen hoses, or a crusty cap seal
• Cooling fans running constantly or poor A/C performance at idle

Stay ahead of issues and the ASX’s radiator will quietly keep temps in the sweet spot for years of reliable commuting and weekend getaways.

Popular questions about the 2020 Mitsubishi ASX radiator

What coolant does a 2020 Mitsubishi ASX use?
The ASX uses a long-life ethylene glycol coolant meeting Mitsubishi’s specifications, often supplied as a premixed “Super Long Life” type. If using concentrate, mix with demineralised water to the ratio recommended in the Owner’s Manual (commonly 50/50) to protect against corrosion and boiling/freezing.

Using the correct chemistry matters—universal coolants that don’t meet Mitsubishi specs can reduce corrosion protection or shorten service life.

How often should the coolant be changed?
Follow the Mitsubishi service schedule for your market. A practical guide is around every 4–5 years or about 100,000 km, with inspections at every service. Vehicles working hard in hot climates, towing, or frequent stop–start traffic may benefit from shorter intervals.

If the coolant looks rusty, milky, or has debris, change it sooner and investigate the cause.

Is it safe to drive if the ASX starts overheating?
No. Pull over safely, switch off, and let it cool. Driving on can warp the cylinder head or damage the head gasket. Once cooled, check the coolant level and for obvious leaks. If unsure, arrange a tow or call roadside assist.

A pressure test and inspection of the radiator, cap, hoses, and water pump is the smart next step.