Parts for your 1988 Mitsubishi Pajero-Radiator

1988 Mitsubishi Pajero Radiator — Purpose, Care, and When to Replace

Yes, a radiator is absolutely relevant and used on the 1988 Mitsubishi Pajero. Technical sources including the Mitsubishi Pajero/Montero Factory Service Manual (Cooling System section for the 4D56 diesel and 6G72 V6), common aftermarket repair guides (e.g., Haynes and Gregory’s manuals for 1983–1994 models), and Mitsubishi ASA/CAPS parts catalogues all specify a front-mounted, liquid-cooled radiator as standard equipment. Depending on trim and market, these vehicles run a crossflow radiator paired with a viscous fan and, on many models, an auxiliary electric fan for the air-con condenser.

On a 1988 Pajero, the radiator’s job is to pull heat out of the engine coolant so the motor stays in its happy zone under the bonnet. It keeps towing, beach runs, and long Kiwi or Aussie highway slogs drama-free by preventing overheating and head gasket grief. Coolant circulates through the engine, then into the radiator where airflow and the fan shed heat before the coolant loops back around again.

As part of regular servicing, owners should treat the radiator as a core bit of reliability kit. A quality ethylene-glycol coolant mixed 50/50 with demineralised water is the go, avoid mixing coolant types. Many workshops recommend flushing and replacing coolant every 2 years or 40,000 km, and checking the radiator cap (often 0.9 bar), hoses, clamps, and the viscous fan clutch at the same time. Capacity varies by engine and radiator, but plan on roughly 8–10 litres, always confirm for the exact engine and spec.

Common signs it’s time to service or replace the radiator include rising temp gauge under load, rusty or sludgy coolant, wet fins or crusty green/white stains, brittle tanks, or a coolant smell after shut-down. A clean exterior counts too—mud and bugs block airflow, so a gentle rinse through the fins goes a long way.

• Replacement pointers:
  • Work stone cold, drain the system via the petcock or lower hose.
  • Remove shroud and fan if needed, then detach top/bottom hoses, overflow tube, and (for autos) trans cooler lines.
  • Lift the radiator out carefully, swap rubber mounts if worn.
  • Fit the new unit with fresh hoses, clamps, thermostat, and cap if they’re tired.
  • Refill with the correct mix, run the heater on hot, bleed air, and check for leaks. Dispose of old coolant responsibly.

Popular questions about 1988 Mitsubishi Pajero radiators

What coolant type and capacity does a 1988 Pajero use?
Most 1988 Pajeros are happy on a 50/50 mix of quality ethylene‑glycol coolant and demineralised water. Depending on engine (2.5 turbo-diesel or 3.0 V6) and radiator size, expect roughly 8–10 litres. Always verify the exact capacity in a workshop manual or the owner’s book, and don’t mix different coolant chemistries.

How often should the radiator be serviced or replaced?
Coolant should be changed about every 2 years or 40,000 km. Inspect the radiator, cap, hoses, and fan clutch at each service. Replacement isn’t strictly time-based—do it when the core is blocked, tanks are cracked, fins are crumbling, or temperatures creep up under load despite a clean system.

Are Pajero auto trans cooler lines connected to the radiator?
Many automatic 1988 Pajeros route transmission fluid through an integrated cooler in the radiator end tank. If removing the radiator on an auto, cap the lines, replace the sealing washers if fitted, and top up/bleed the transmission fluid per the manual after refitting.