GMC 4000 Series Service Manual page 299

Sec. 6A
_____ ________ G M C S E R V I C E M A N U A L
Page 288
GASOLINE ENGINES
Inspect engine front and rear mountings as
part of regular engine maintenance program. Be
sure all bracket attaching bolts are kept tight.
Refer to ENGINE MOUNTINGS (SEC. 6D) for engine
mounting information.
USE ENGINE OIL AS SPECIFIED IN
LUBRICATION (SEC. 0) AND SERVICE
CRANKCASE VENTILATION
AND OIL FILTERS
UNITS
REGULARLY.
j