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- DIESEL COOLANT MAINTENANCE - SERVICE TIPS
| Publication Date: April 14, 2009 |
| 2003-2005 Excursion |
2003-2008 E-350, E-450, E-550, F-Super Duty
This TSB is to provide additional information to supplement the Workshop Manual (WSM) and Owner Guide information on the importance of cooling system maintenance for diesel engine equipped vehicles. Some customers, using their trucks under special operating conditions, indicate that operating with insufficient coolant strength (antifreeze or anticorrosion) can result in significant engine damage. Insufficient coolant strength can result when:
- Cooling system pressure and coolant is lost.
- The coolant level is topped off using the incorrect coolant.
- The coolant is mixed with hard water.
- Coolant is mixed at the incorrect concentration.
- Vehicles are operated under the special operating conditions as defined in the maintenance schedule (heavy commercial use that results in frequent or extensive idling, frequent low speed/rush hour traffic use; vehicles operated under special conditions such as: sustained high speed driving at maximum GVWR load, towing a trailer, using a slide in camper (F-Super Duty) or car top carrier (E-Series).
Proper cooling system maintenance is critical for maximum engine performance and efficiency on today's high technology diesel engines. It is essential that; the proper coolant is used, the coolant level is checked routinely, the coolant strength (antifreeze and anticorrosion property) is tested frequently and that the cooling system is flushed (with Motorcraft® Engine Cooling System Iron Cleaner) at the proper intervals.
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