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Change Engine Oil (Gas Engines)
Road conditions as well as your kind of driving affect the
interval at which your oil should be changed. Check the
following to determine if any apply to you:
•
Frequent short trips where the engine does not achieve
full operating temperature (operating temperature de-
fined as 190° F (66° C ) coolant temperature).
•
Extensive engine idling (over 10 minutes per hour of
operation) at ambient temperatures less than 32° F (0°
C).
•
Driving in dusty conditions.
•
Frequent trailer towing.
•
Taxi, police, or delivery service (commercial service).
•
Off-road or desert operation.
•
Extensive operation at high engine speeds (greater
than 2900 rpm) and loads (greater than 70% throttle).
If ANY of these apply to you, then change your engine oil
at every interval shown in schedule ЉBЉ of the ЉMainte-
nance SchedulesЉ section of this manual.
If none of these apply to you, then change your engine oil
at every interval shown on schedule ЉAЉ of the ЉMainte-
nance SchedulesЉ section of this manual.
NOTE: Most vehicles are operated under the conditions
listed for Schedule ЉB.Љ
Dusty Conditions
Driving through dust-laden air increases the problems of
keeping abrasive materials out of the engine. Under these
conditions, special attention should be given to the
engine air cleaner, the crankcase inlet air cleaner and the
crankcase ventilation system. Make sure that these units
are clean at all times. This will tend to reduce to a
minimum the amount of abrasive material that may enter
the engine.
400 MAINTAINING YOUR VEHICLE