Peterbilt 579 Operator's Manual page 364

REAR AXLE AND SUSPENSION
CAUTION
Do not mix lubricants of different
grades; although, mixing different
brands of the same grade lubricant
(meeting MIL L2105C), is acceptable.
Lubricants of different grades are not
compatible and could damage the
axle.
NOTE
In all cases, lubricant supplier as-
sumes full responsibility for the per-
formance of their product, and for
product and patent liability.
5
For recommended types and brands of
lubricants, contact your dealer.
5-128
Dana Spicer and Fabco
No initial drain is required on Dana
Spicer axles that are factory filled with
an Dana Spicer-approved synthetic
lubricant.
•
Petroleum-based lubricants must
be drained within the first 5,000
miles (8,000 km) if converting to
an approved synthetic lubricant.
Initial Change: See Preventive
Maintenance Schedule on page 5-12
for standard rear axle service intervals.
Change mineral-based lubricant in
other Dana Spicer and Fabco axle
assemblies (new or rebuilt) within the
first 3,000 to 5,000 miles (4,800 to
8,000 km).
•
For petroleum-based axles, use
lubricants meeting MIL L2105C/D
grade specifications or approved
synthetic lubrication. Do not use
oil additives.
Y53-6047–2C
All Vehicles with Dana Spicer
and Fabco Axles: See Preventive
Maintenance Schedule on page 5-12.
Contact your dealer for approved
synthetic lubricant brands.
•
Dana Spicer Axles with synthetic
lubrication and Out Runner Seals:
drain, flush, and refill at 500,000
miles (804,000 km).
Axle Housing Breather Vent:
•
Check and clean the axle housing
breather vent at each oil level
check.
Meritor:
•
See Meritor Lubrication
Maintenance Manual (MM1).
(04/13)