Paccar PX 8 Operator's Manual - page 74
Maintenance Specifications
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Y53-1030A 12/09
PACCAR
If the replacement coolant is Chevron Texaco, Shell Rotella
or their private label counterpar ts the coolant must be
replaced with new coolant whenever the engine is over-
hauled or repairs involve the replacement of the following
components:
• Rocker lever housing gasket.
• Lubricating oil cooler housing gasket.
• Cylinder head gasket.
• Thermostat housing gasket.
For further details of engine coolant for PACCAR PX-8
engines, refer to Cummins Coolant Requirements and Main-
tenance Bulletin 3666132.
Checking Coolant Condition
To ensure the Extended Life Coolant (ELC) in your vehicle
always provides maximum freeze protection, perform the fol-
lowing tests:
1. Check the coolant color at every maintenance inter-
val. It should be a bright red with no signs of debris
or any oil.
2. Test the freeze point at least two times a year. A
refractometer or test strips can be used to measure
the protection level.
3. Keep the cooling system at full levels by topping-up
using ELC pre-diluted 50/50.
A refractometer must be used to measure the freezing point
of the coolant accurately. Use Fleetguard
®
refractometer,
Part Number C2800.