Mitsubishi — Cooling system cleaning and pouring coolant
Maintenance
From a Mitsubishi owner's manual — check it applies to your exact model before use.
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Before you start
- Coolant containing LLC is toxic and must not be disposed of into regular sewage.
Procedure
- Close the drain cocks or plug.
- Pour cleaning solution (non-corrosive to rubber and metals) into cooling system.
- Operate engine at 800 to 900 min-1 for about 15 minutes, then drain cleaning solution.
- Close drain cocks or plugs.
- Pour fresh water and operate engine at 800 to 900 min-1 for about 10 minutes.
- Continue flushing until draining water is clear.
- Pour undiluted LLC and then soft water slowly to the full level.
- Close expansion tank cap securely and crank engine about 10 seconds.
Specs & values
- 800 to 900 min-1
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.