Parts for your 1998 Mitsubishi Lancer-Radiator

1998 Mitsubishi Lancer Radiator — What It Does and How to Look After It

Yes, a radiator is absolutely fitted to the 1998 Mitsubishi Lancer. Technical references including the Mitsubishi Lancer CE (1996–2003) Workshop Manual, Gregory’s/Haynes Service and Repair Manual (Lancer 1992–2005), and Mitsubishi OEM parts catalogues (ASA/CAPS) describe a liquid-cooled system with a front-mounted aluminium radiator. These sources cover common CE-series engines (such as the 1.5L 4G15 and 1.8L 4G93) and detail the radiator, cap, thermostat, water pump, electric fans and hoses as core cooling components.

The radiator’s job is to pull heat out of the engine coolant and dump it to ambient air. Coolant flows from the engine through the radiator core, air passes across the fins, and the fans kick in when needed to keep temperatures steady. That stable operating temp protects head gaskets, keeps oil at the right viscosity, and helps the Lancer run smoothly and efficiently on Aussie and Kiwi roads.

When is it time to service or replace? Typical signs include:

• Overheating under load or at idle, or the temp gauge creeping up on warmer days
• Coolant loss, wet marks around the plastic tanks, or pink/white crust at seams and hose necks
• Brown/sludgy coolant, blocked fins, or external corrosion on the core
• Cracked plastic end tanks or a cap that won’t hold pressure

Good servicing habits go a long way:

• Flush and replace coolant at the interval in the service book: typically every 2 years/40,000 km for conventional green coolant, or up to 4–5 years/100,000 km for long-life types. Don’t mix coolant chemistries.
• Use the correct spec ethylene-glycol coolant at about 50/50 with demineralised water. Tap water can promote scale.
• Inspect the cap, upper/lower hoses and clamps every service, replace any that feel soft, swollen or cracked.
• Check fan operation and ensure the fins are clear of bugs and leaves.

Thinking about replacement? Let the engine cool completely, drain the system, disconnect hoses and fan shroud, and—on autos—carefully remove and plug the transmission cooler lines at the radiator. Fit the new unit with fresh hoses and a quality cap, refill with the correct mix, and bleed air with the heater on. After a short drive, recheck levels and look for leaks. For autos, top up and check ATF level, as some fluid may be lost through the integrated cooler. Always follow torque specs and procedures in the CE workshop manual.

Popular questions about 1998 Mitsubishi Lancer radiators

What coolant should a 1998 Lancer use, and how much does it take?
These models use an ethylene-glycol, silicate-free coolant that meets Mitsubishi specs. In Australia and New Zealand, a quality green or OEM long-life coolant is common—just don’t mix types or colours. Capacity varies by engine and heater configuration, but expect roughly 5–7 litres total. Use a 50/50 mix with demineralised water unless using premix, and always check the owner’s or workshop manual for the exact figure.

How often should the radiator coolant be changed?
For conventional green coolant, every 2 years or about 40,000 km is typical. Long-life coolants can stretch to 4–5 years or around 100,000 km. Harsh conditions, lots of short trips, or towing can justify shorter intervals. If the coolant looks rusty, oily, or sludgy, service it sooner.

Does the auto 1998 Lancer have a transmission cooler in the radiator?
Yes. Automatic models route transmission fluid through a small heat exchanger inside the radiator end tank. When replacing the radiator, cap the lines to avoid contamination, use new sealing washers or O-rings where applicable, and recheck ATF level after the job.