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SUBJECT:

#1099, Rev. Z
March 25, 2022
Page 1 of 25

Transmission Fluid/Filter Change Recommendations

MODELS AFFECTED:

Allison Commercial On-Highway Products, AT 500 Series, MT 600 Series, HT 700 Series,
1000 and 2000 Series Transmissions, 3000 SeriesTM Transmissions (includes B300/400
and T200/300), 4000 SeriesTM Transmissions (includes B500 and T400/500), TC10®,
H 40/50 EPTM Products, eGen FlexTM

Introduction:
Optimum performance and reliability of heavy-duty automatic transmissions can be noticeably influenced by
the type of fluid and filter(s) used and the frequency with which those fluid and filter(s) are changed. Allison
Transmission has designed extensive programs including specifications and tests to verify the quality of fluids and
consequently have specific fluid and filter change recommendations. Due to field studies, changes in emission
requirements, vehicle design, and operating environments, Allison Transmission has realigned recommended
fluid and filter change intervals. Heavy-duty Automatic Transmission change intervals have been revised to
more closely match today’s operating environments.

Model Year 2009 and 2010 Prognostics:
Prognostics that monitor and maximize fluid and filter life were offered in Model Year 2009 for 1000, 2000, 3000,
and 4000 Series Transmissions. 3000 and 4000 Series Transmissions began using Prognostics with serial
numbers 6510822005 (3000), 6520099957 (3000), 6610257671 (4000), 6620007438 (4000). 1000 and 2000
Series Transmission Prognostics were first available in July of 2008 (MY2009). MY2009 Allison Prognostics
must only be used with Allison Approved TES 668® and TES 295® fluids. January 2010 Allison Prognostics are
compatible with TES 668, TES 295 and TES 389® approved fluids in 3000 and 4000 Series Transmissions starting
with TCM calibration CIN 4C or later (4C-xxxxx-yyy-z) and all January 2010 1000 and 2000 Series Transmissions.
All 3000 and 4000 Series Transmissions utilizing Prognostics require the use of Genuine Allison High-Capacity
filters. All 1000 and 2000 Series Transmissions utilizing Prognostics require the use of Genuine Allison Control Main
Spin-On filter, P/N 29539579. 1000, 2000, 3000, and 4000 Series Transmissions may or may not have this feature
"enabled" or turned ON. This option requires that the OEM provide the wiring necessary and the feature enabled in
the TCM. Refer to the appropriate Operator’s Manual for the methods of identifying if Prognostics is enabled.
Refer to Table 4 for Filter/Fluid Change Intervals/Fluid Capacities by Series.

DH / SL4136EN

6051437

Copyright © 2022 Allison Transmission, Inc. All Rights Reserved.

#1099, Rev. Z
March 25, 2022
Page 2 of 25

Fluids and Specifications:
Fluid types are defined by applicable performance specification. The following transmission fluid types are
approved for use in Allison Commercial On-Highway transmission products.
Fluid Type
TES 668 and TES 295 Fluids
• See allisontransmission.com for a list of Allison
Approved TES 668 and TES 295 fluids

Recommended (Intended) Usage
• General or severe duty
• Extended change interval (2) (required)
• Extended Transmission Coverage (ETC) policy
(required)
• Prognostics (required) MY2009
• General or severe duty

TES 389 Fluids
• Schedule One TES 389*

• Standard change interval (2)

• Military specification fluids (for use in Military Vehicles
Only) (1)

• Prognostics MY2010 (3)

• See allisontransmission.com for a list of Allison
Approved TES 389 fluids
(1) Military specification fluids are approved for use in Military Applications in 3000, 4000, AT, MT, and HT Series products
only, and are strictly prohibited from use in 1000 and 2000 Series transmission products.
(2) Fluid and filter change intervals are based on transmission model, vocation (duty cycle), and fluid type (see attached
charts). NOTE: Fluid drain intervals are based on 100 percent fill with Allison approved fluids. Fluid change intervals may be
adjusted based on fluid analysis and fleet data. Refer to Service Information Letter (SIL) 17-TR-96 for details.
(3) Prognostics are available with Allison Approved TES 668, TES 295 and TES 389 fluids only.

Local conditions, severity of operation or duty cycle may require more or less frequent fluid change
intervals that differ from the published recommended fluid change intervals of Allison Transmission.
Allison Transmission recommends that customers use fluid analysis as the primary method for
determining fluid change intervals. In the absence of a fluid analysis program the fluid change intervals
listed in the charts must be used.
For information concerning models not listed in this publication, please call the Allison Technical
Assistance Center at 1-800-252-5283.
Refer to the latest revision of Allison publication number GN2055EN, “Technicians’ Guide to Automatic
Transmission Fluid”, and SIL 17-TR-96 for additional information on oil analysis and general knowledge about
transmission fluids.

Non-approved Fluids
DEXRON®-III and DEXRON®-VI fluids are no longer approved for use in Commercial On-Highway transmission
products and have been removed from all Allison Approved TES 389 fluids lists. TES 228® (C4 type) fluids are
no longer approved for use in Commercial On-Highway transmission products and have been removed from
the Allison Approved TES 389 fluids list.

Allison Fluid and Filters for Extended Transmission Coverage (ETC)
Specified fluids and genuine Allison filters must be used to qualify for Extended Transmission Coverage. This
coverage is forfeited when non-approved fluids and non-genuine filters are used.

Copyright © 2022 Allison Transmission, Inc. All Rights Reserved.

#1099, Rev. Z
March 25, 2022
Page 3 of 25

Transmission Fluid Mixture Guidelines
Transmissions with a mixture of TES 668 or TES 295 fluid and Allison Approved TES 389 fluids must follow
fluid/filter change recommendations for Allison Approved TES 389. Upon the second oil change, if the customer
reinstalls TES 668 or TES 295, the fluid/filter change recommendations outlined in 100 percent TES 668 or
TES 295 approved fluids must be followed.

Fluid Exchange Machines:
Fluid exchanging machines are not recommended or recognized due to variation and inconsistencies that may not
guarantee removal of 100 percent of the used fluid.

3000 and 4000 Series, H 40/50 EP and eGen Flex Filters:
New Genuine Allison High Capacity filters were released into production beginning with:
6510670912 (3000)

6610205144 (4000)

7110001551)
(H 40/50 EP and eGen Flex)

6520067342 (3000)

6620002521 (4000)

High-Capacity Filters:
Genuine Allison 3000 and 4000 Series, H 40/50 EP and eGen Flex high-capacity filters were released into
production beginning July 2006. High-capacity filters allow extended filter change intervals when used with
Allison Approved TES 668 or TES 295 fluid. High-capacity service filters can be identified by P/N 29558294 or
P/N 29558295 stamped into the filter end cap. Previous Allison 3000 and 4000 Series and H 40/50 EP filters can
be identified by P/N 29538231 or P/N 29538232 stamped into the filter end cap.
Table 1. Filter Kits
Series
3000 and 4000
H 40/50 EP and eGen Flex

High-Capacity Filter Kit
29558328 (2 inch)
29558329 (4 inch)
29545785

NOTE: Extended 3000 and 4000 Series transmissions Allison Approved TES 668 or TES 295 fluid and
filter change intervals are only allowed with Genuine Allison high-capacity filters. Filters must be changed
at or before recommended intervals.

Copyright © 2022 Allison Transmission, Inc. All Rights Reserved.

#1099, Rev. Z
March 25, 2022
Page 4 of 25

Initial Transmission Filter Change Schedule (Production/ReTran®)
*3000 and 4000 SeriesTransmissions — Main Filter 5000 miles (8000 km)/200 hours
*3000 and 4000 Series Transmission ReTran — Main Filter 5000 miles (8000 km)/200 hours
H 40/50 EP and eGen Flex Spin-On Control Main Filter 5000 miles (8000 km)/200 hours
AT Auxiliary Filter 5000 miles (8000 km)/200 hours
MT Auxiliary Filter 5000 miles (8000 km)/200 hours
*Not required beginning with S/N 6510670912, S/N 6610205144, S/N 6520067342, S/N 6620002521, and
S/N 9320005689, S/N 9370006284, S/N 9420006679, S/N 9470005459

1000, 2000, 3000, and 4000 Series Hours vs. Miles Chart
Table 2 (2000/3000 Hour Based Maintenance) and Table 3 (4000/6000 Hour Based Maintenance) list the
equivalent mileage based on the Allison recommended change intervals for Allison Approved TES 668 or TES 295
approved fluids. For example, vocations or vehicles that operate with a high density shift cycle typically reach
the 6000/3000 hour change limit before the recommended mileage limit.
An example could be a transit bus equipped with a B500R that operates an average of 7 mph (11 km/h).
Recommended fluid/filter change interval for a B500R equipped with 2 inch control module in a transit vocation
using a TES 668 or TES 295 fluid is 150,000 miles/240 000 km/6000 hours or 48 months whichever occurs first.
Using Table 3 Hours vs. Miles, a vehicle operating at 7 mph (11 km/h) will travel approximately 42,000 miles (66
000 km) in 6000 hours. If an odometer is used to determine when to change the transmission fluid and filters, this
specific vehicle would change the fluid every 42,000 miles (66 000 km) and filters every 21,000 miles (33 000 km).
Estimating average mph can be approximated by dividing total distance traveled in a typical day by the hours
elapsed during that total distance. An example would be a vehicle that operates on average 96 miles (155 km) a
day over an 8 hour period would average 12 mph (19 km/h).

Copyright © 2022 Allison Transmission, Inc. All Rights Reserved.

Table 2. 2000 and 3000 Hour Based Maintenance — Hours vs. Miles
2000 Hour Based Maintenance

3000 Hour Based Maintenance

km Equivalent

MPH Average

miles Equivalent

km/h Average

km Equivalent

MPH Average

miles Equivalent

5

10000

3

6000

5

15000

3

9000

6

12000

4

8000

6

18000

4

12000

8

16000

5

1000

8

24000

5

15000

10

20000

6

12000

10

30000

6

18000

11

22000

7

14000

11

33000

7

21000

13

26000

8

16000

13

39000

8

24000

14

28000

9

18000

14

42000

9

27000

16

32000

10

20000

16

48000

10

30000

18

36000

11

22000

18

54000

11

33000

19

38000

12

24000

19

57000

12

36000

21

42000

13

26000

21

63000

13

39000

23

46000

14

28000

23

69000

14

42000

24

48000

15

30000

24

72000

15

45000

26

52000

16

32000

26

78000

16

48000

27

54000

17

34000

27

81000

17

51000

29

58000

18

36000

29

87000

18

54000

31

62000

19

38000

31

93000

19

57000

32

64000

20

40000

32

96000

20

60000

34

68000

21

42000

34

102000

21

63000

35

70000

22

44000

35

105000

22

66000

37