Mobil Excel 15
ISO VG 15 anti-wear hydraulic oil
Buy
| Retailer | Pack | Price | |
|---|---|---|---|
| Amazon | 5 gal | See retailer | Open |
| McMaster-Carr | 5 gal | See retailer | Open |
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Key specs
| Spec | Value | Method |
|---|---|---|
| KV40 | 15.8 cSt | ASTM D445 |
| KV100 | 4.07 cSt | ASTM D445 |
| Viscosity index | 168 | ASTM D2270 |
| Pour point | -56 °C | ASTM D97 |
| Flash point | 178 °C | ASTM D92 |
| Density at 15 °C | 0.837 g/cm³ | typical |
Grade checks
- KV40 is inside ISO VG 15 (13.5–16.5 cSt).
- Computed viscosity index is 168, within 2 points of the listed 168.
Viscosity and temperature
ASTM D341 (Walther) fitted to the published KV40 and KV100. It is an interpolation between those two points, and it is not meaningful below the pour point. Move the control to read a temperature.
Classification
- Category: Hydraulic
- Attribute: Anti-Wear
- Synthetic: Conventional
- Copper: 1B
- Note: 6% higher efficiency than DTE 20
Equivalents
| Oil | Score | Why |
|---|---|---|
| Chevron Rando HDZ 15 | 65 | same ISO 15, VI 148 vs 168, additive aw, conventional, pour -62 vs -56, buyable now |
| Shell Tellus S2 V 15 | 49 | same ISO 15, VI 142 vs 168, additive aw, conventional, flash within 15 °C |
| Shell Tellus S2 VX 15 | 45 | same ISO 15, VI 143 vs 168, additive aw, conventional |
| Castrol Hyspin AWS 15 | 40 | same ISO 15, additive aw, conventional |
| Castrol Brayco HV 15 | 25 | same ISO 15, VI 350 vs 168, conventional, pour -60 vs -56 |
Scores use published typical data. This is not an exact equivalent, and it is not an OEM approval. Confirm the substitute with the machine builder.
Documents
Related: Mobil, DTE 10 Excel, viscosity index calculator, ISO / SAE / AGMA chart.
Questions
Is Mobil Excel 15 an ISO VG 15 oil?
Yes. The catalogue lists it as ISO VG 15, which is a kinematic viscosity of 15 cSt at 40 °C, plus or minus 10 percent (13.5 to 16.5 cSt). Confirm the current data sheet before you fill a machine.
What is a Mobil Excel 15 equivalent?
Published oils in the same application and grade include Chevron Rando HDZ 15. The match is from typical data-sheet values, not from an OEM approval. It is not an exact equivalent. Confirm the substitute with the machine builder.
Can Mobil Excel 15 be mixed with another oil?
Mixing two oils that share a base family is sometimes done and sometimes a mistake. Do not mix this oil with a PAG. For any other mix, follow the maker's change-over guidance and the machine manual.
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