Ultra Coolant
- ISO grade
- ISO 46 equiv.
- Viscosity @ 40 °C
- 44.5 cSt
- Viscosity @ 100 °C
- 9.2 cSt
- Viscosity index
- 195
- Flash point
- 500 °F
- Pour point
- -40 °F
- Specific gravity
- 0.998
- TAN (new oil)
- 0.10 maxmg KOH/g
- Max sump temp
- 228 °F
- Service life
- 8,000 hr / 2 yr
Water: Hygroscopic — absorbs moisture rather than separating it; drain the sump low point weekly in humid plants.
Seals: Viton and PTFE. Attacks some alkyd paints and polycarbonate bowls.
Varnish tendency: Lowest of all common stocks.
- • IR R-Series
- • IR UP6 / UP5
- • IR Sierra
- • IR SSR EP/HP 25–300 hp
- • Sullair Sullube 32 (PAG family)
- • Quincy QuinSyn PG
- • Summit PGS-46
Oil-to-oil compatibility
These chemistries react or separate — expect gel, sludge, separator plugging and possible airend damage. Full drain, flush and seal review.
Polyglycol (PAG / PG) + PAO synthetic (polyalphaolefin)
| Property | Ingersoll Rand Ultra Coolant | ExxonMobil Mobil Rarus SHC 1026 |
|---|---|---|
| Base stock | Polyglycol (PAG / PG) | PAO synthetic (polyalphaolefin) |
| ISO grade | ISO 46 equiv. | ISO 46 |
| cSt @ 40 °C | 44.5 | 46 |
| cSt @ 100 °C | 9.2 | 8 |
| VI | 195 | 147 |
| Flash point | 500 °F | 505 °F |
| Pour point | -40 °F | -54 °F |
| Spec. gravity | 0.998 | 0.850 |
| Service life | 8,000 hr / 2 yr | 8,000 hr |
| Max sump temp | 228 °F | 220 °F |
| Seals | Viton and PTFE. Attacks some alkyd paints and polycarbonate bowls. | Nitrile, Viton, PTFE. |
| Water behaviour | Hygroscopic — absorbs moisture rather than separating it; drain the sump low point weekly in humid plants. | Excellent demulsibility. |
| NSF H1 | No | No |
Properties above are typical published values, not specification limits, and equivalents share a base stock and a similar additive package — they are a sourcing starting point, not an OEM approval. Confirm against the current fluid data sheet and document any change on the service report. See the oil selection guide and the fluid cross-reference.