Mobil Delvac 1™ ATF — Synthetic Heavy-Duty Automatic Transmission Fluid
Mobil Delvac 1™ ATF — Synthetic Heavy-Duty Automatic Transmission Fluid
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ExxonMobil · Mobil Delvac™ · Authorised Distributor — South Africa
Mobil Delvac 1™ ATF is a fully synthetic advanced technology automatic transmission fluid recommended by Allison Transmission and approved against the Allison TES-295 specification — the global gold standard for heavy-duty automatic transmissions in trucks, buses, coaches and off-highway equipment. Formulated with synthetic base stocks for exceptional performance across extreme temperature ranges, from -54°C cold-start conditions to sustained high-temperature heavy-duty operation. Delivers extended drain capability, long-term friction retention, superior shear stability and outstanding gear shifting performance. Also approved by ZF, Voith Turbo, MAN and Daimler Truck — making it the correct single ATF specification for mixed commercial fleets across multiple OEM transmission brands. Available from Orbit Industrial — authorised Mobil distributor for South Africa.
At a Glance
TES-295
Allison Approval
-54°C
Pour Point
168
Viscosity Index
236°C
Flash Point
Full Syn
Formulation
Red
Colour
Allison TES-295 — The Global Standard for Heavy-Duty Automatic Transmissions
Allison Transmission's TES-295 specification is the most stringent and widely recognised approval standard for heavy-duty automatic transmission fluids globally. Allison transmissions are fitted to some of the world's most demanding commercial vehicles — city buses, refuse trucks, military vehicles, mining equipment and heavy haulage. The TES-295 approval means Mobil Delvac 1 ATF has been tested and validated by Allison to meet extended drain capability, long-term friction durability, oxidation resistance and cleanliness requirements under the harshest operating conditions. Using a non-TES-295 fluid in an Allison transmission risks voiding warranty and reducing transmission life significantly.
Key Features & Benefits
Enhanced Long-Term Frictional Properties
Maintains precise friction characteristics throughout the extended drain interval — delivering consistent, smooth shifting performance and improved transmission efficiency from the first service fill through to the drain point. Prevents the shift quality degradation associated with conventional ATF fluids over time.
Exceptional Thermal & Oxidation Stability
Keeps transmissions clean under the harshest driving conditions — resisting the deposit formation and varnishing that reduces clutch pack efficiency and valve body performance in heavily loaded, high-temperature automatic transmission applications such as urban bus routes and mine haulage.
Outstanding Film Strength & Anti-Wear
Provides significant wear reduction across gears, clutch packs, bearings and planetary sets — extending transmission service life under the severe mechanical stress of heavy load, frequent shifting and high torque applications in commercial transport and mining operations.
Excellent Low-Temperature Fluidity
Pour Point of -54°C and Brookfield Viscosity of 8,400 mPa.s at -40°C ensure prompt, reliable lubrication at sub-zero ambient temperatures — protecting transmissions during cold-start conditions in cold-climate mining, defence and utility vehicle applications where conventional ATFs thicken excessively.
Exceptional Shear Stability
Viscosity Index of 168 and outstanding shear stability ensure the fluid maintains optimal viscosity even under the severest heavy-duty, high-temperature operating conditions — preventing the viscosity breakdown that increases wear and reduces film thickness in demanding transmission applications.
Compatible with Mineral ATF Fluids
Reduced concern in top-off situations — Mobil Delvac 1 ATF is compatible with conventional mineral ATF fluids, providing flexibility in field service situations and reducing the risk of transmission damage where accidental mixing occurs. Excellent seal material compatibility and leakage control.
Recommended Applications
Heavy-Duty Trucks & Haulage
Long-haul and regional distribution trucks fitted with Allison, ZF and Voith automatic transmissions where extended drain intervals, consistent shift quality and maximum transmission life are operational priorities.
Urban Buses & Coaches
City buses, intercity coaches and transit vehicles operating frequent stop-start cycles with Allison automatic transmissions — the primary application for which TES-295 was developed and where friction durability and transmission cleanliness are most critical.
Mining & Off-Highway Equipment
Rigid dump trucks, articulated haulers, wheel loaders and other off-highway equipment with automatic transmissions operating in demanding mining environments where fluid durability under extreme load and temperature is critical to uptime.
Utility & Municipal Vehicles
Refuse collection vehicles, fire appliances, emergency response vehicles and municipal equipment with Allison or ZF automatic transmissions requiring reliable, low-maintenance fluid that performs consistently across variable duty cycles.
Voith Turbo Transmissions
Voith DIWA hydrodynamic automatic transmissions fitted to buses and rail vehicles — approved under Voith Service Bulletins 013 and 118 for extended drain use, and Voith fluid specification H55.6336.xx.
Mixed Commercial Fleets
Fleets running multiple OEM transmission brands — Allison, ZF, Voith, MAN and Daimler. The broad approval coverage of Mobil Delvac 1 ATF allows a single fluid specification across the entire automatic transmission fleet, simplifying procurement and reducing lubricant SKU complexity.
OEM Approvals & Specifications
Formal OEM Approvals
Technical Properties
| Property | Test Method | Value |
|---|---|---|
| Kinematic Viscosity @ 100°C | ASTM D445 | 7.3 mm²/s |
| Kinematic Viscosity @ 40°C | ASTM D445 | 39 mm²/s |
| Viscosity Index | ASTM D2270 | 168 |
| Brookfield Viscosity @ -40°C | ASTM D2983 | 8,400 mPa.s |
| Pour Point | ASTM D97 | -54°C |
| Flash Point | ASTM D92 | 236°C |
| Density @ 15.6°C | ASTM D4052 | 0.85 g/ml |
| Colour | AMS 1771 | Red |
Source: ExxonMobil Product Data Sheet, September 2025. Typical properties — not guaranteed specifications.
Technical Documentation
Mobil Delvac 1™ ATF — Technical Datasheet
Click to download · ExxonMobil · September 2025
For Safety Data Sheet (SDS) / MSDS documentation, visit msds.exxonmobil.com →
Orbit Industrial Supplies is an authorised ExxonMobil distributor — supplying genuine Mobil Delvac™ commercial vehicle lubricants including engine oils, ATFs, gear oils and greases to the transport, mining, construction and fleet sectors across the Western Cape, Northern Cape, Garden Route and Gauteng. Request a quote →

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