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ISO-VG viscosity grades for industrial lubricants
The diagram below indicates minimum and maximum viscosity in centistokes for equivalent ISO-VG grades.

Equivalent Viscosity of ISO-VG Grades and SAE Crankcase Oil Grades
| ISO-VG Grade |
SAE Crankcase Oil Grade |
| 22 |
5W |
| 32 |
10W |
| 46 |
15W |
| 68 |
20W |
| 100 |
30 |
| 150 |
40 |
| 220 |
50 |
| 320 |
60 |
Equivalent Viscosity of ISO-VG Grades and SAE Aircraft Oil Grades
| ISO-VG Grade |
SAE Aircraft Oil Grade |
| 100 |
65 |
| 150 |
80 |
| 220 |
100 |
| 320 |
120 |
Equivalent Viscosity of ISO-VG Grades and SAE Gear Lube Grades
| ISO-VG Grade |
SAE Gear Lube Grade |
| 46 |
75W |
| 100 |
80W-90 |
| 220 |
90 |
| 460 |
85W-140 |
| 1500 |
250 |
Equivalent Viscosity of ISO-VG Grades and AGMA Gear Lube Grades
| ISO-VG Grade |
AGMA Gear Lube Grade |
| Regular |
EP |
| 46 |
1 |
|
| 68 |
2 |
2 EP |
| 100 |
3 |
3 EP |
| 150 |
4 |
4 EP |
| 220 |
5 |
5 EP |
| 320 |
6 |
6 EP |
| 460 |
7 |
7 EP |
| 680 |
8 |
8 EP |
ISO-VG Grades and Temperature

- tC = 5/9(tF - 32)
- tF = 9/5 tC + 32
- 1 reyns (lb s/in2) = 6896.55 (Pa s)
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