Page 230 of 272
230 MAINTAINING YOUR VEHICLERelay A ssignment, Standard Equipment1. Windshield wiper motor (W)
2. Diesel engine control unit (M)
3. Turn signals (B)
Fuse and Relay Optional EquipmentThe cover is located below the driver’s seat.
Remove cover:
1. Press both detent springs down and remove cover.
Install cover:
2. Position cover at bottom and engage both detent
springs.
Freightliner-all.book Pag e 230 Monday, December 1, 2003 2:54 PM
Page 233 of 272
MAINTAININ G YOUR VEHICLE 233
7
BULB REPLA CEMENTSwitch the lights off to prevent short circuits.
Only touch new bulbs with a clean, lint-free cloth. Do
not touch bulbs with wet or greasy fingers.
Only fit 12 volt bulbs of the same type as before and
with the correct wattage rating.
Front Lamp UnitBulbs are changed from inside the engine
compartment.
Move the retainer bar to the side and remove the
housing cover.
WARNING!
Bulbs and bulb holders can become very hot. Al-
low the lamp to cool down before changing the
bulb.
Keep bulbs out of reach of children.
Do not use bulbs which have been dropped or
which show signs of scratches on the glass. They
could explode.
Changing an H7 bulb:
The bulb is pressurized. Always wear eye and
hand protection.
Freightliner-all.book Pag e 233 Monday, December 1, 2003 2:54 PM
Page 244 of 272
244 MAINTAINING YOUR VEHICLECA PA CITIES
Engine with oil filter
Engine oilFuel tank Cooling system Windshield washer
system
Including
reserve fuel
All vehicles about
9.5 US qt
(9.0 l)about
26.4 US gal
(100 l)about
2.8 US gal
(10.5 l)about
2.7 US gal
(10.0 l)about
7.4 US qt
(7.0 l)
Freightliner-all.book Pag e 244 Monday, December 1, 2003 2:54 PM
Page 245 of 272

MAINTAININ G YOUR VEHICLE 245
7
Recommended Fluids and LubricantsComponent Recommended Fluid
Brake Use brake fluid approved to MB 331.0, or a DOT 4 brake fluid with:
minimum
dry boiling point (ERBP) 500°F, minimum wet boiling point
(WERBP) 356°F, maximum viscosity 1500 mm
2/s, conforming to FMVSS 116
and ISO 4925.
Coolant Use coolant approved to MB 325.0, such as Valvoline GO5, or an equivalent
Extended Life Coolant.
Engine Use engine oils approved to MB 228.3 or MB 228.5 that are also licensed to
API CI-4.
Automatic Transmission Use ATF approved to MB 236.10, MB 236.12. Synthetic Dexron III®
Automatic Transmission Fluid may be substituted.
Power Steering No fluid service required. Use Power Steering Fluid approved to MB 341.
Dexron III® Automatic Transmission Fluid may be substituted.
Rear Axle Use oils approved to MB 235.0, such as Shell Spirax MB 90. Reduced axle
durability may result if an unapproved product is used.
Freightliner-all.book Pag e 245 Monday, December 1, 2003 2:54 PM
Page 247 of 272