Mitsubishi S12A2 — Fill the radiator
Maintenance · Cooling system
For the Mitsubishi S12A2, from the Mitsubishi owner's manual.
Applies to: Mitsubishi S12A2, Mitsubishi S12A2 engine
Before you start
- Check coolant level only after engine has stopped and filler cap is cool enough to touch with your bare hand
Procedure
- Close the drain plugs and drain cocks of the basic block and water pump; tighten radiator drain plug.
- Remove the radiator cap and pour in pure, undiluted LLC.
- Add soft water slowly to avoid trapped air; see LLC concentration chart.
- When tank is full, tighten the radiator cap securely.
- Crank the engine several times, 10 seconds each, at about one-minute intervals, to bleed air.
- Check coolant level in radiator and add if necessary; if reserve tank equipped, fill to FULL mark.
- Start engine and run under light load until thermostat opening temperature is reached.
- Stop engine, check coolant level and add coolant if low; check hose joints for leaks.
Specs & values
- LLC concentration: 30% at -10 deg C, 40% at -20 deg C, 50% at -30 deg C, 60% at -45 deg C
Full service-parts list: Mitsubishi S12A2 →
Source: Mitsubishi owner's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.