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| Hydrocal 38 |  |
Hydrocal 38 Naphthenic Base Oils are produced exclusively by the Calumet Lubricants Co. in a multistage high pressure hydrotreating process. |
| Tests | Test Method | Typicals |
| Viscosity, CST @ 40C | D445 | 3.42 |
| Viscosity, CST @ 100C | D445 | 1.29 |
| Viscosity, SUS @ 100F | D2161 | 37.9 |
| Viscosity, SUS @ 210F | D2161 | 30.4 |
| Viscosity Index | D2270 | 86 |
| Gravity, API, 60F | D4052 | 29.4 |
| Flash, COC, C(F) | D92 | 108(227) |
| Pour Point, C(F) | D97 | -62(-80) |
| Color, ASTM | D1500 | L0.5 |
| Aniline Point, C(F) | D611 | 61.0(141.9) |
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