What Fluid/Filters Should I be Using?

Allison Transmission recommends that customers use an Allison Approved TES 668® or TES 295® synthetic automatic transmission fluid to extend drain intervals and to enhance transmission performance and durability in all operating environments with on-highway products.

TES-389® fluids may be used in traditional on-highway products but do not provide the same drain intervals or filter change intervals as Allison Approved TES 668® or TES 295®.

A complete list of approved fluids can be found at allisontransmission.com. C4 fluids and DEXRON®-VI are no longer recommended in any commercial on-highway transmission.

Fluid Loss With Filter Change Only

When changing the Control Main Filter (1000/2000 Series) and Main or Lube Filters (3000/4000 Series and eGen Flex™ ), approximate fluid loss for each filter is as follows:

• 1000 and 2000 Product Families Transmissions Control
Main Filter = 1 pint (0.47 liters)

• 3000 and 4000 Product Families Transmissions
Main Filter = 2 quarts (1.9 liters)
Lube Filter = 8 quarts (7.6 liters)

• eGen Flex™ Product
Main Filter = 1 quarts (0.94 liters)
Lube Filter = 3 quarts (2.84 liters)

Prognostics

Prognostics that monitor and maximize fluid and filter life are offered for 1000/2000/3000/4000 Product Families. Allison Prognostics are compatible with TES 668®, TES 295® and TES 389® approved fluids.

All 3000/4000 Product Family Transmissions utilizing Prognostics require the use of Allison High Capacity filters. All 1000/2000 Product Family Transmissions utilizing Prognostics require the use of Allison control main spin-on filter, P/N 29539579.

1000/2000/3000/4000 Product Family Transmissions may or may not have the prognostics feature “enabled” or turned ON. This option requires that the OEM provide the necessary wiring and enable the prognostics feature in the TCM. Refer to the appropriate operator’s manual for the methods of identifying if Prognostics is enabled.

High Capacity Filters allow extended filter change intervals when used with an Allison Approved TES 668® or TES 295® automatic transmission fluid.

High Capacity “Service” Filters can be identified by P/N 29558294 or P/N 29558295 stamped into the filter end cap. Prior filters (non-high capacity) for Allison 3000/4000 Product Families transmissions can be identified by P/N 29538231 or P/N 29538232 stamped into the filter end cap.

New Allison 3000/4000 Product Family of transmissions are shipped to OEMs with High Capacity “Factory” Filters that contain different part numbers on the end caps.

3000/4000 Product Families
2 Inch Filter Kit P/N 29558328
4 Inch Filter Kit P/N 29558329

Extended fluid and filter change intervals are only allowed with an Allison Approved TES 668® or TES 295® automatic transmission fluid and Allison High Capacity Filters. Filters must be changed at or before recommended intervals.

For a list of current Allison Approved TES 668® and TES 295® automatic transmission fluids, go to allisontransmission.com.