Operator`s manual

Cooling System 51
Extended Life Coolant
Change Interval
Replace coolant every 600,000 miles
(960,000 km), 12,000 hours or every four
years, whichever comes first.
A one-time extender package must be added
to the cooling system after 300,000 miles
(480,000 km), 6,000 hours or two years,
whichever comes first.
Note: DO NOT add supplement coolant
additives (SCA) to extended life coolant.
CAUTION
Extended life coolant will test as out of
additives (SCA), but SCA should not be
added. Shortened engine life may be the
result of adding SCA.
Should the system become contaminated
with regular coolant exceeding 10% of the
system’s total capacity or if SCA is added to
the system, either drain the system and refill
with new extended life coolant or maintain
the system as for regular coolant. Continue
treating with SCA and change the coolant
at the intervals recommended for regular
coolant.
Coolant Filter
DO NOT use a filter that contains SCA.
Instead use a bypass canister or “empty”
filter. Replace the “empty” filter every
125,000 miles (200,000 km) or 2,500 hrs
or 12 months, whichever comes first, to
prevent external rust damage to the filter
walls.
WARNING
Hot engine. Keep yourself clear of all hot
engine parts and/or fluids. A hot engine
and/or fluids can cause serious burns.