Monograde SAE 90 transmission and gear oils produced at the Türkmenbašy refinery to TDS 660-2016, in three API performance levels — GL-2/GL-3, GL-3 and GL-3/GL-4 — for manual gearboxes and drive axles of moderate load severity. The standard also covers an SAE 85W-90 GL-5 multigrade, shown in the table for comparison.
Specification
- Viscosity grade: SAE 90 monograde
- Performance levels: API GL-2/GL-3, GL-3 and GL-3/GL-4
- Standard: TDS 660-2016
- Kinematic viscosity at 100 °C: min 15.5 mm²/s
- Viscosity index: min 90
- Flash point, open cup: min 220 °C
Grades
SAE 90 GL-2/GL-3
Kinematic viscosity at 100 °C 15.5 mm²/s, flash point (open cup) min 220 °C, pour point max −12 °C.
SAE 90 GL-3
Kinematic viscosity at 100 °C 15.5 mm²/s, flash point (open cup) min 220 °C, pour point max −12 °C.
SAE 90 GL-3/GL-4
Kinematic viscosity at 100 °C 15.5 mm²/s, flash point (open cup) min 220 °C, pour point max −12 °C.
SAE 85W-90 GL-5
Kinematic viscosity at 100 °C 17.0 mm²/s, flash point (open cup) min 220 °C, pour point max −20 °C.
Physical and chemical indicators
| Parameter | SAE 90 GL-2/GL-3 | SAE 90 GL-3 | SAE 90 GL-3/GL-4 | SAE 85W-90 GL-5 |
|---|
| Kinematic viscosity at 100 °C, mm²/s, min | 15.5 | 15.5 | 15.5 | 17.0 |
| Viscosity index, min | 90 | 90 | 90 | 95 |
| Dynamic viscosity at −20 °C, Pa·s, max | — | — | — | 47.5 |
| Flash point, open cup, °C, min | 220 | 220 | 220 | 220 |
| Water content, %, max | Traces | Traces | Traces | Traces |
| Acid number, mg KOH/g, max | — | — | — | 2.0 |
| Copper strip corrosion, 3 h, max | 2c at 100 °C | 2c at 100 °C | 2c at 100 °C | 2c at 120 °C |
| Pour point, °C, max | −12 | −12 | −12 | −20 |
| Colour, ASTM, max | 4.0 | 4.0 | 4.0 | 4.0 |
| Four-ball scuffing index, N (kgf), min | 490 (50) | 539 (55) | 568 (58) | — |
| Four-ball weld load, N (kgf), min | 3283 (335) | 3479 (355) | 3687 (376) | — |
| Wear scar at 392 N, 1 h, 20 °C, mm, max | — | — | — | 0.4 |
| Density at 20 °C, g/cm³, max | 0.900 | 0.900 | 0.900 | 0.900 |
Applications
Manual gearboxes, drive axles, steering gears and transfer cases in commercial vehicles and agricultural machinery.
Related
Loading and delivery
EXW or FCA Türkmenbaşy. Bulk in ISO tanks, flexitanks and rail tank cars; drummed and palletised consignments for smaller lots.