operators_manual

Every 750,000 mi / 1,200,000 km/ 24,000 Hours / 8 years
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Cooling - Extended Life Coolant (ELC)
• Flush, drain, and refill with new coolant. (Refer to Cooling System Maintenance on page 250 for maintenance instructions.)
Main and Auxiliary Transmission (including Eaton Automated or PACCAR Transmission) - Main and Auxiliary Transmission (ON
HIGHWAY)
• Drain lubricant while warm. Flush each unit with clean flushing oil. (Refer to Transmission Maintenance on page 297 for
maintenance instructions.)
Lubricants
Schedule service more frequently if you
are operating under severe conditions such
as extreme heat or cold, with very heavy
loads, off-road, etc. For any special service
requirements, consult your service
manuals and your lubricant supplier.
Please remember: one key to keeping your
truck running at top economy and
prolonging its life is proper lubrication
servicing. Neglecting this essential aspect
of vehicle care can cost time and money in
the long run.
WARNING
Handle lubricants carefully. Vehicle lu-
bricants (oil and grease) can be poi-
sonous and cause sickness, personal
injury, or death. They can also damage
the paint on the vehicle.
CAUTION
DO NOT mix different types of lubri-
cants. Mixing lubricants (oil and
grease) of different brands or types
could damage vehicle components;
therefore, drain (or remove) old lubri-
cants from the unit before refilling it.
Engine
Proper engine lubrication depends on the
outside temperatures where you will be
driving. Use the oil recommended for the
conditions you are most likely to be
operating in. You will find a complete
engine lubrication service guide in the
Engine Operation Manual that came with
your vehicle. The engine operator manual
contains specific maintenance tasks that
you or a qualified service technician need
to perform to maintain the engine.
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Ensure that all maintenance intervals leading up to this point are repeated during this interval prior to the completion of
those listed here.
MAINTENANCE - Lubricants
230 Y53-6126-1A1 (01/21)
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