Product Description Castrol Axle AP 85W-140 is a high quality, mineral-based gear oil formulated for use under demanding operating conditions. It is d…
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Castrol Axle AP 85W-140 is a high quality, mineral-based gear oil formulated for use under demanding operating conditions. It is designed for differentials, final drives, non-synchronized manual transmissions, steering gears, and other applications that require a gear oil with API GL-5 performance and extreme pressure (EP) protection. It resists thermal degradation and maintains protective film strength even under high loads, helping reduce wear and extending component life.
This product replaces the older “EPX 85W-140” line under the Axle AP label.
Conventional differentials in passenger cars, light trucks and heavy-duty trucks.
Final drives, non-synchronized manual gearboxes.
Steering gears that require a heavy, high-film-strength lubricant.
Not recommended for certain OEMs (e.g. Eaton, Spicer, Renault, Rockwell) that specify non-EP oils.
| Specification | Conformance |
|---|---|
| API service | GL-5 |
| Other specs | MT-1, SAE J2360 |
| OEM / Additional References | Mack GO-J, ArvinMeritor O76-A |
| Property | Test Method | Value |
|---|---|---|
| Density @ 15 °C | ASTM D4052 | ~ 0.907 g/ml |
| Viscosity @ 40 °C | ASTM D445 | ~ 338 mm²/s |
| Viscosity @ 100 °C | ASTM D445 | ~ 25.2 mm²/s |
| Viscosity Index | ASTM D2270 | ~ 97 |
| Cold Viscosity (Brookfield) @ -12 °C | ASTM D2983 | ~ 83,300 mPa·s (cP) |
| Pour Point | ASTM D97 | -24 °C |
| Flash Point (COC) | ASTM D92 | ~ 210 °C |
Strong load carrying / EP (extreme pressure) protection helps protect gears under heavy duty or high torque conditions.
Good thermal and oxidation stability reduces deposits and keeps lubricant effective over longer service periods.
High film strength ensures protection even under shock loads.
Formulated for severe environments: high temperature, high pressure, and heavy‐duty service.
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