•Heavy Loading.
•Taxi, police, or delivery service (commercial service).
•Off-road or desert operation.
•If equipped for and operating with E-85 (ethanol)
fuel.
NOTE:IfANYof these apply to you then change your
engine oil every 3,000 miles (5 000 km) or 3 months,
whichever comes first and follow schedule “B” of the
Maintenance Schedulessection of this manual.
NOTE:IfANYof these apply to you then flush and
replace your engine coolant every 102,000 miles (170 000
km) or 60 months, whichever comes first and follow
schedule “B” of theMaintenance Schedulessection of
this manual.
NOTE:Most vehicles are operated under the conditions
listed for ScheduleB.Second is Schedule“A”. It is for vehicles that are not
operated under any of the conditions listed under Sched-
uleB.
Use the schedule that best describes your driving condi-
tions. Where time and mileage are listed, follow the
interval that occurs first.
NOTE:Under no circumstances should oil change in-
tervals exceed 6000 miles (10 000 km) or 6 months
whichever comes first.
CAUTION!
Failure to perform the required maintenance items
may result in damage to the vehicle.
MAINTENANCE SCHEDULES 423
8
M
A
I
N
T
E
N
A
N
C
E
S
C
H
E
D
U
L
E
S
Miles 105,000 108,000 111,000 114,000 117,000 120,000
(Kilometers) (175 000) (180 000) (185 000) (190 000) (195 000) (200 000)
Replace ignition cables.X
Inspect PCV valve, replace as necessary.**X
Inspect auto tension drive belt and replace if
required.XX
Drain and refill automatic tranmission fluid
and change main sump and spin-on cooler
return filter (if equipped) [545RFE only].X
Flush and replace engine coolant at 120
months, if not replaced at 102,000 miles (170
000 km).X
* This applies only if the vehicle is used for frequent
trailer towing, snowplowing, fleet vehicle or commercial
service.
**This maintenance is recommend, but not required.Inspection and service should also be performed anytime
a malfunction is observed or suspected. Retain all re-
ceipts.
436 SCHEDULE “B”
8
M
A
I
N
T
E
N
A
N
C
E
S
C
H
E
D
U
L
E
S
