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Allison TES 668 transmission fluid, with TES 295 and C-4: which TotalEnergies grades qualify

Fluidmatic SYN T668 is on Allison's TES 668 Approved Fluids list as approval 668-10082021 (list dated 4 Sep 2026).[2]

It is not on Allison's TES 295 list: TotalEnergies' data sheet lists it only as suitable for TES 295.[3][6]

Allison no longer approves C-4 fluids for commercial on-highway transmissions, so the C-4 grades below are only for equipment whose manual still names C-4.[4]

Published · Updated · How did we check this? · Pack sizes and prices

Approval status at a glance

Four status levels: OEM-approved (OEM list); TotalEnergies-reported suitable; Meets stated performance (TotalEnergies claim); Confirm in your equipment manual. Where sources disagree we show the weaker one.

Confirm in your equipment manual: Allison says C-4 (TES 228) fluids are no longer approved for commercial on-highway transmissions.

What is Allison TES 668?

TES 668 is Allison's current specification for on-highway transmission fluid. Allison recommends TES 668 Approved Fluids for its 1000, 2000, 3000 and 4000 Series, H 40/50 EP, eGen Flex and eGen Power products.[1]

Allison describes TES 668 as building on TES 295 with a modern additive package.[5]

TES 668 vs TES 295 vs C-4: what's the difference?

They are separate Allison specifications. TES 668 is the newest; TES 295 fluids remain on Allison's list for the 1000 to 4000 Series and H 40/50 EP, and Allison suggests TES 295 users consider TES 668 at their next service. C-4 (TES 228) is no longer approved for commercial on-highway use.[1][4]

Allison on-highway fluid specifications compared[1][2][3][4]
TES 668TES 295C-4 (TES 228)
Allison's positionRecommended for current on-highway productsStill listed; Allison suggests moving to TES 668No longer approved for commercial on-highway transmissions
Applies to (per Allison)1000-4000 Series, H 40/50 EP, eGen Flex, eGen Power1000-4000 Series, H 40/50 EPOnly where an equipment manual still names C-4
Allison listTES 668 Approved Fluids, 4 Sep 2026TES 295 / TES 468 Approved Fluids, 18 Jun 2025No public C-4 list on Allison's approved fluids page
Our gradesFluidmatic SYN T668: on the list (668-10082021)None on the list. SYN T668: TotalEnergies-reported suitable4 grades with TotalEnergies 'meets' or 'suitable for' claims

Is Fluidmatic SYN T668 on Allison's TES 295 list?

No. The TotalEnergies fluid on Allison's TES 295 / TES 468 list is Fluidmatic SYN T295, which we don't supply. Fluidmatic SYN T668 is on the TES 668 list, and its TotalEnergies data sheet puts TES 295 under 'Suitable for', not under manufacturer approvals.[3][2][6]

If your transmission's records call for TES 295, the practical choice is whether to move to a TES 668 fluid, as Allison suggests. Check your warranty terms first.(our interpretation)

Can I still use an Allison C-4 fluid?

Not in a commercial on-highway Allison transmission: Allison's publication 1099 states that TES 228 (C4 type) fluids are no longer approved for those products.[4]

TotalEnergies' own Dynatrans ACX data sheet labels the spec 'ALLISON C4 (Obsolete)'.[11]

The C-4 grades listed below are multi-purpose oils (tractor, ATF and transmission) whose data sheets still mention C-4. Use one only where your equipment manual names C-4.(our interpretation)

How do I verify an official Allison approval?

Look the fluid up on Allison's current approved fluids list for the spec your transmission needs. Each approved fluid has an Allison approval number, like 668-10082021.[1][2]

  • Find the model series (for example 3000 or 4000 Series) on the transmission ID plate or in the service records.(our interpretation)
  • Allison says Extended Transmission Coverage is forfeited when non-approved fluids and non-genuine filters are used.[4]
  • Service intervals depend on the fluid type. Allison says TES 389 fluids do not get the same fluid and filter change intervals as TES 668 or TES 295 fluids.[5]

Supply

Pack sizes and prices from Bulk Lubricants Australia

For an on-highway Allison automatic, the grade on Allison's list is Fluidmatic SYN T668. The other grades are listed for equipment whose manual names C-4. For heavy-duty engine oils, see the Cummins and Volvo approvals guide.(our interpretation) Fluidmatic SYN T668 comes in 20 L packs and drums; Dynatrans MPX and Multagri Super 15W-40 come in drums; Fluidmatic DIII MV comes in 0.5 L packs, 1 L packs, 5 L packs and drums; Fluidmatic XLD FE comes in 1 L packs, 20 L packs and drums. Each is quoted per order, for collection from Maddington (Perth) or freight Australia-wide. Status details are in the panel above.

FLUIDMATIC SYN T668

  • Allison TES 668: OEM-approved (OEM list)
  • Allison TES 295: TotalEnergies-reported suitable

Pack sizes: 20L, Drum

Request a price for FLUIDMATIC SYN T668

DYNATRANS MPX SAE 10W-30 or SAE 80

  • Allison C-4: TotalEnergies-reported suitable

Pack sizes: Drum

Request a price for DYNATRANS MPX SAE 10W-30 or SAE 80

MULTAGRI SUPER 15W-40 SAE 15W-40 SAE 80W-90

  • Allison C-4: Meets stated performance (TotalEnergies claim)

Pack sizes: Drum

Request a price for MULTAGRI SUPER 15W-40 SAE 15W-40 SAE 80W-90

FLUIDMATIC DIII MV

  • Allison C-4: TotalEnergies-reported suitable

Pack sizes: 0.5L, 1L, 5L, Drum

Request a price for FLUIDMATIC DIII MV

FLUIDMATIC XLD FE

  • Allison C-4: Meets stated performance (TotalEnergies claim)

Pack sizes: 1L, 20L, Drum

Request a price for FLUIDMATIC XLD FE

How did we check this?

On 24 Oct 2026 we read Allison's TES 668 list (4 Sep 2026), its TES 295 / TES 468 list (18 Jun 2025), publication 1099 Rev BB and the approved fluids page. We then compared them with each grade's TotalEnergies data sheet and the TotalEnergies product list supplied to us. Where sources differ, this page uses the weaker wording.

Found an error or a newer list? Email quotes@bulklubricants.com.au with the source and we’ll review this page.

Where does this information come from?

  1. Allison Transmission: Allison Approved Fluids (web page, read 24 Oct 2026)
  2. Allison: TES 668 Approved Fluids list, dated 4 Sep 2026 (PDF)
  3. Allison: TES 295 / TES 468 Approved Fluids list, dated 18 Jun 2025 (PDF)
  4. Allison: Transmission Fluid and Filter Service Recommendations, 1099 Rev BB, 6 Jun 2023 (PDF)
  5. Allison: Approved Fluids brochure (PDF, undated)
  6. TotalEnergies data sheet: Fluidmatic SYN T668, last updated Mar 2026 (PDF)
  7. TotalEnergies data sheet: Fluidmatic XLD FE, last updated Jan 2025 (PDF)
  8. TotalEnergies data sheet: Fluidmatic DIII MV, last updated May 2023 (PDF)
  9. TotalEnergies data sheet: Dynatrans MPX, last updated Jul 2023 (PDF)
  10. TotalEnergies data sheet: Multagri Super 15W-40, last updated Feb 2024 (PDF)
  11. TotalEnergies data sheet: Dynatrans ACX 10W, 30, 50, last updated Nov 2025 (PDF)
  12. TotalEnergies product list supplied to Bulk Lubricants Australia, Oct 2026 (not public)