Preventive Maintenance Intervals
Preventive Maintenance Intervals
The following guide establishes preventive maintenance intervals. These
recommendations should be followed as closely as possible to obtain long life and
optimum performance from your engine. When performed on a regular basis,
changing the engine oil, coolant, and filters is the least costly way of obtaining safe
and reliable vehicle operation. Added benefits and savings occur when you check
that the valves, fuel injectors, oil and cooling circuits are in good working order
during oil changes.
The intervals shown apply only to the maintenance functions described. These
functions should be coordinated with other regularly scheduled maintenance.
Schedule Use
Complete each maintenance operation at the required interval. The intervals are
based on a collaboration of field and fleet data. For a more accurate analysis of
when fluids should be changed, such as engine oil, refer to publication Engine
Requirements; Lubricating Oil, Fuel and Filters and publication Coolant Selections
for Detroit™ Engines, available from authorized Detroit™ distributors.
Each maintenance table shows which maintenance operation must be performed at
the recommended interval (in miles, kilometers, and hours).
NOTE:
Failure to check and maintain Supplemental Coolant Additive levels
at required concentrations will result in severe damage (corrosion) to the
engine cooling system and related components. Coolant must be inhibited
with the recommended Supplemental Coolant Additives listed in this
manual.
Cooling System Flush and Fill
Coolant Flush and Fill - Proper maintenance of the cooling system is vital to its
performance and longevity. The cooling system must, on a constant basis, deal with
cavitation, temperature / pressure swings, and continuous threats on the additive
package. Once the additives have been depleted from the coolant, it will only be a
matter of time until the engine components suffer. Refer to section "Cooling
System Fill Procedure"
Cooling System Inspection - Inspect the cooling system as follows:
Preventive Maintenance Intervals
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All information subject to change without notice.
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DDC-SVC-MAN-0175
