256 • Section 10 — Chassis Information Cayman 2006
ENGINE OIL
Cummins Engine Requirements:
The maintenance guidelines in the Cummins Operation & Maintenance Manual are the recommendations
for the engine to extend the engine life and improve performance, resulting in cost effi cient operations. A good
maintenance schedule begins with a daily awareness of the engine and its various systems.
A high grade 15W-40 multi-viscosity heavy
duty lubricating oil meeting Cummins Engineering
Specifi cation CES 20071 or CES 20076, American
Petroleum Institute (API) specifi cation CH-4 which can
be used as an alternative to CES 20071 is recommended.
Lubricating oils meeting API CG-4 specifi cations may
be used at a reduced drain interval. The engine uses
Pennzoil 15W-40 heavy duty engine lubricating oil
that meets Cummins specifi cations. 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 specifi cations are recommended for extreme cold temperatures only. Low
viscosity oils used for winter operations will aid in starting. Synthetic oils, or oil with adequate low temperature
properties used for Arctic operations where the engine cannot be kept warm when shut down, will aid in starting.
The use of synthetic oils should not be used to extend drain intervals. Extended oil change intervals can decrease
engine life and possibly affect the engine warranty.
Oil additives should not be used unless the oil supplier or oil manufacturer has been consulted and provided
positive evidence or data establishing satisfactory performance in the engine.
NOTE:
The engine does not require a “break-in” procedure.
INFORMATION:
Refer to the Engine Manufacturers Owners Manual for details on the oil maintenance
schedule.
ENGINE SHUTDOWN
General guidelines for shutting the engine down are fairly simplistic. Allow the engine to idle three to fi ve
minutes after a full load operation to allow adequate cool down of pistons, cylinders, bearings and turbocharger
components. Under normal driving conditions, exiting the highway is generally lighter engine operation and the
need for the three to fi ve minutes is not necessary.
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