Detroit Diesel — Flushing Cooling System
Maintenance
From a Detroit Diesel operator's manual — check it applies to your exact model before use.
Before you start
- Fill slowly to prevent rapid cooling and distortion of engine castings.
Procedure
- Drain previous season's solution from engine.
- Refill with soft, clean water; fill slowly if engine hot.
- Start engine and operate 15 minutes to circulate water.
- Drain cooling system completely.
- Refill with solution required for coming season.
Source: Detroit Diesel operator'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.