UltraShift PLUS
TRSM0940 EN-US
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March 2024 - A

Lubrication Specifications

Caution
Do not introduce additives and friction modifiers.
Caution
Never mix standard oils and synthetic transmission oils in the same transmission. When switching between types of lubricants, all areas of each affected component must be thoroughly drained.
Caution
Do not mix lubricants of different grades.

Note: For a list of Eaton Approved Synthetic Lubricants, see TCMT0021 Roadranger Lubricant Products or call 1-800-826-HELP (4357).

Note: The use of lubricants not meeting these requirements will affect warranty coverage.

Note: For lubrication change and inspection intervals, see TCMT0021 Roadranger Lubricant Products.

Note: Please refer to CLSM0200 Eaton Heavy-Duty Clutches for clutch lubrication and service guidelines.

Buy From a Reputable Dealer

For a complete list of approved and reputable dealers, write to:

Eaton, Worldwide Marketing Services

P.O. Box 4013

Kalamazoo, MI 49003

Transmission Operating Angles

If the transmission operating angle is more than 12 degrees, or approximately a 21% grade, improper lubrication will occur. The operating angle is the transmission mounting angle in the chassis plus the percent of upgrade (expressed in degrees).

For operating angles over 12 degrees, the transmission must be equipped with an oil pump or cooler kit to ensure proper lubrication.

Transmission filters should be changed during regular lubrication intervals. Inspection of the transmission filter should be conducted during preventative maintenance checks for damage or corrosion. Replace as necessary.

Operating Temperatures

Transmissions must not be operated at temperatures that are consistently above 250°F (121°C). Operation at temperatures above this limit causes loaded gear tooth temperatures to exceed 350°F (177°C) which will ultimately destroy the heat treatment of the gears.The following conditions, in any combination, can cause operating temperatures that exceed 250°F (120°C):

  • Operating consistently at high loads/slow speeds
  • High ambient temperatures
  • Restricted air flow around the transmission
  • Exhaust system too close to the transmission
  • High horsepower operation
  • Use of engine retarders

Maintenance and Lubricant Change Intervals

Transmission inspections and lubricant changes are outlined below.

For a list of Eaton Roadranger-approved lubricants, see TCMT0020 Roadranger Lubricant Products.

IntervalDescription
First 1,000 to 1,500 milesInspect oil levels. Check for leaks.
Every 2,500 milesInspect lubricant level. Perform Transmission Inspection.
Every 5 years or 500,000 miles, whichever occurs firstChange oil and filters.