Mobilube™ HD 85W-140 — Heavy-Duty GL-5 Gear Lubricant
Mobilube™ HD 85W-140 — Heavy-Duty GL-5 Gear Lubricant
ExxonMobil · Mobilube™ HD · Authorised Distributor — Western Cape & Northern Cape
Mobilube™ HD 85W-140 is a high-performance, heavy-duty gear lubricant formulated from high-performance base oils and an advanced additive system — engineered for the most heavily loaded axles, final drives and differentials where maximum film strength and extreme pressure protection are required. The heavier SAE 85W-140 grade delivers a thicker oil film at elevated operating temperatures than 80W-90 — making it the preferred specification for towing applications, fully loaded haul truck axles, high-torque agricultural equipment and hypoid gear applications where operating temperatures and loads are consistently at the high end. Recommended by ExxonMobil for applications requiring API GL-5 service. Available in 20L and 208L drum from Orbit Industrial — authorised Mobil distributor for the Western Cape and Northern Cape.
At a Glance
85W-140
SAE Grade
GL-5
API Rating
97
Viscosity Index
-18°C
Pour Point
224°C
Flash Point
25.3
KV @ 100°C (cSt)
Mineral
Base Stock
20L / 208L
Pack Sizes
85W-140 vs 80W-90 — When to Specify the Heavier Grade
Grade Selection Guide
Specify 85W-140 when:
- OEM specifies SAE 85W-140 or 90 grade
- Towing or heavy drawbar applications
- Fully loaded haul trucks in high ambient temperatures
- High-torque low-speed applications requiring maximum film thickness
- Axles running consistently hot under sustained high load
Specify 80W-90 when:
- OEM specifies SAE 80W-90 grade
- General on-highway and off-highway API GL-5 applications
- Mixed temperature range operations
- Lighter vehicle axles and final drives
Always confirm grade with your OEM handbook. Contact Orbit Industrial for application-specific grade selection assistance.
Features & Benefits
Maximum Film Thickness at High Temperature
The heavier SAE 140 high-temperature viscosity grade delivers a thicker, more robust oil film between hypoid gear teeth at elevated operating temperatures — providing greater protection against metal-to-metal contact in the most heavily loaded axle and final drive applications.
Excellent Chemical & Thermal Stability
Maintains oil integrity at elevated bulk oil temperatures in heavily loaded differentials, tandem axles and final drives — resisting oxidation, deposit formation and viscosity increase throughout the drain interval.
Outstanding EP Protection
Advanced EP additive system protects hypoid gear teeth under high-speed/shock load, high-speed/low-torque and low-speed/high-torque conditions — the critical loading scenarios that cause premature gear failure in towing, haul truck and heavy agricultural applications.
Outstanding Rust & Corrosion Protection
Demonstrated excellent rust protection in water-contaminated and wet conditions — protecting axle and drivetrain components in wet haul road, coastal agricultural and high-humidity mining environments.
High Flash Point — 224°C
High flash point provides a wide safety margin in hot running axle and final drive applications — reducing fire risk in enclosed drivetrain components operating at sustained high temperatures under heavy load.
Cost-Effective Mineral Performance
Delivers reliable API GL-5 performance at a competitive mineral oil price point — the right choice for high-load applications where operating conditions require a heavier grade but not necessarily a fully synthetic formulation.
Recommended Applications
Heavy Towing & Drawbar
Truck and commercial vehicle axles under sustained high-torque towing loads — where 85W-140 is specified by OEM for maximum film protection in high-load towing and drawbar applications.
Mining Haul Truck Axles
Rear axles and final drives on fully loaded Cat, Komatsu, Bell and Liebherr haul trucks where the OEM specifies 85W-140 for maximum operating temperature film strength in open pit mining.
Agricultural Equipment
Tractor axles and final drives, combine harvester drives and heavy agricultural equipment across the Western Cape and Northern Cape where 85W-140 is OEM-specified for heavy cultivation and harvesting loads.
Construction Equipment
Axles and final drives on graders, wheel loaders, compactors and ADTs operating in high-load construction applications where 85W-140 is specified by the OEM.
Hypoid Gears — High Load
Heavy-duty industrial and automotive hypoid gear applications operating consistently at the high end of the load and temperature range where 85W-140 provides better film protection than 80W-90.
Initial Fill, Top-Off & Refill
Suitable for initial fill, topping-off and refilling of enclosed commercial drive axles and final drives where SAE 85W-140 API GL-5 gear lubricant is specified.
Note: Mobilube HD 85W-140 is not recommended for applications requiring API GL-4 level performance, and is not intended for transmissions requiring engine oil or automatic transmission fluid. Always confirm grade with your OEM handbook.
Industry Specifications
MIL-SPEC
MIL-PRF-2105E
Mack
GO-J
ZF
TE-ML 05A · 07A · 12E · 16F · 19B · 21A
Meritor
0-76-D · 0-76-N
Dana Spicer
SHAES-256 Rev E
Technical Properties
| Property | Test Method | Mobilube HD 85W-140 |
|---|---|---|
| SAE Grade | — | 85W-140 |
| Kinematic Viscosity @ 100°C (cSt) | ASTM D445 | 25.3 |
| Kinematic Viscosity @ 40°C (cSt) | ASTM D445 | 328 |
| Viscosity Index | ASTM D2270 | 97 |
| Flash Point, Cleveland Open Cup (°C) | ASTM D92 | 224 |
| Pour Point (°C) | ASTM D97 | -18 |
| Density @ 15°C (kg/l) | ASTM D4052 | 0.91 |
Typical properties — not guaranteed specifications. Actual results may vary.
Available Pack Sizes
In Stock — Western Cape & Northern Cape
20 Litre
Workshop supply & small fleet
208 Litre Drum
Fleet depots & mining site supply
Also available: Mobilube HD 80W-90 for applications requiring the lighter API GL-5 grade. Contact Orbit Industrial for grade selection assistance. Request a bulk quote →
Technical Documentation
Mobilube™ HD 85W-140 — Technical Datasheet
Click to download · ExxonMobil · Distributed by Orbit Industrial
For Safety Data Sheet (SDS) visit msds.exxonmobil.com → · Contact Orbit Industrial for grade selection and application confirmation.
Orbit Industrial Supplies is an authorised ExxonMobil distributor — supplying genuine Mobil™ gear oils, engine oils, hydraulic fluids, greases and industrial lubricants to the mining, construction, agriculture, transport and manufacturing sectors across the Western Cape, Northern Cape, Garden Route and Gauteng. Request a quote → · View full gear oil range → · Mining supply →
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