Is This Severe Usage?
Year Mileage % Towing
2004 19,000 37
2005 20,000 24
2006 16,000 28
2007 20,000 25
2008 24,000 44
2009 18,000 33
The trailer is a 10,000 lb. fifth wheel. Truck will be a 2011 350 6.7L 4X4 SRW.
In your opinion, would this use pattern put me into the severe use category for maintenance indicated in the table on page 84 of the 4th printing of the diesel supplement?
QUOTE
Towing a trailer or using a camper or car-top carrier
As required – Change engine oil and replace oil filter as indicated by message center and perform services as listed in the Scheduled Maintenance chart.
Every 15,000 miles (24,000 km), 6 months, 600 hours of engine operation, or as indicated by the message center or instrument cluster (whichever occurs first)– Change engine- and frame-mounted fuel filters
Every 15,000 miles (24,000 km) or
800 hours of engine operation (whichever comes first)
– Inspect concentration (freeze-point protection) and additive strength (corrosion inhibitor) (add engine coolant additive, if required). Refer to Engine cooling system in the Introduction chapter.
Every 30,000 miles (48,000 km) – Replace wheel bearing grease and grease seals on 4x2 wheel bearings (if non-sealed bearings are used)
Every 60,000 miles (96,000 km) – Change transfer case fluid (4x4 only)
Every 60,000 miles (96,000 km) or 2400 hours of engine operation
(whichever comes first)
– Flush & refill engine coolant (refer to Engine Coolant Change Record) – Do not add engine coolant additive
Perform the services noted in the preceding table at the specified
time/mileage (km) period either within 3,000 miles (5,000 km) of the
OIL CHANGE REQUIRED message appearing in the message center or
when the time/mileage (km) reading indicates service is due
UNQUOTE
Thanks.














