Oil Recommendations - Monaco DIPLOMAT 2004 Owner's Manual

1. When operating below 32º F, an engine block heater or other
means to warm the engine can enhance engine starting. This will
ease cranking and help prevent engine misfiring and white smoke
during starting.
2. Always follow the recommended oil, fuel, and coolant
specifications as outlined in the OEM Engine Manual. Proper oil
viscosity and coolant concentration eases engine starting and helps
to avoid engine damage.
3. Allow the engine to idle until it warms sufficiently for operation.
Utilize the fast idle feature to quicken the process. Wait to
operate the vehicle for at least three minutes or until the coolant
temperature begins to move.
4. Check the air inlet and filter daily, or as necessary, when driving in
snow conditions.
5. The demand on batteries increase during winter; check and
service the batteries frequently to help ensure trouble-free starts.
6. Start out slowly with the motorhome to allow the transmission and
axle lubricants time to circulate and warm before putting them
under full load.
WARNING: Do not use ether cold starting aids to start the
engine as damage may occur.
Following the maintenance guidelines in the engine manufacturer OEM
Manual recommendations for the engine will help to extend engine life and
improve performance, resulting in cost efficient operations. A good
maintenance schedule begins with a daily awareness of the engine and its
various systems.
A high grade 15W-40 multiviscosity heavy duty lubricating oil meeting
Cummins Engineering Specification CES 20071 or CES 20076, American
Petroleum Institute (API) specification CH-4 which can be used as an
alternative to CES 20071 is recommended. Lubricating oils meeting API CG-
4 specifications may be used at a reduced drain interval. The engine uses
Pennzoil 15W-40 heavy duty engine lubricating oil that meets Cummins
specifications. A critical factor in maintaining engine performance and
durability is the use of high grade multigrade lubricating oil and strict
adherence to the maintenance service intervals.
A straight weight or monograde lubricating oil is not recommended.
Shortened drain intervals may be required as determined by a close
monitoring of the lubricating oil condition by means of an oil-sampling
program. The use of oil analysis to extend drain interval is not recommended.
There are numerous variables, which is the basis of the recommendation.
Synthetic oils API category III specifications are recommended for
extreme cold temperatures only.
CHASSIS INFORMATION
DIPLOMAT 2004
OIL
RECOMMENDATIONS
10 • 399