Mobil Medium
ISO VG 46 anti-wear, r&o hydraulic oil
Buy
| Retailer | Pack | Price | |
|---|---|---|---|
| Amazon | 5 gal | See retailer | Open |
| McMaster-Carr | 5 gal | See retailer | Open |
Zoro, Walmart, eBay, Grainger, MSC and Global Industrial are reserved here and will show a row when a link exists. Prices are shown only when they were fetched in the last 24 hours. None of the Amazon links carries a stored price, so Amazon shows no price.
As an Amazon Associate, Evolvent Design earns from qualifying purchases. McMaster-Carr links are not affiliate links.
Key specs
| Spec | Value | Method |
|---|---|---|
| KV40 | 44.5 cSt | ASTM D445 |
| KV100 | 6.9 cSt | ASTM D445 |
| Viscosity index | 98 | ASTM D2270 |
| Pour point | -15 °C | ASTM D97 |
| Flash point | 221 °C | ASTM D92 |
| Density at 15 °C | — | typical |
Grade checks
- KV40 is inside ISO VG 46 (41.4–50.6 cSt).
- Computed viscosity index is 111 from the stored KV40 and KV100 (ASTM D2270). The listed index is 98, more than 2 points away.
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, R&O
- Synthetic: Conventional
- Copper: 1B
- Note: Hydraulic oil
Equivalents
| Oil | Score | Why |
|---|---|---|
| Chevron Clarity AW 46 | 77 | same ISO 46, VI 101 vs 98, additive aw/ro, conventional, flash within 15 °C, buyable now |
| Chevron Hydraulic Oil AW 46 | 75 | same ISO 46, VI 98 vs 98, additive aw/ro, conventional, flash within 15 °C |
| Shell Tellus S2 M 46 | 75 | same ISO 46, VI 98 vs 98, additive aw/ro, conventional, flash within 15 °C |
| Shell Tellus S2 MX 46 | 68 | same ISO 46, VI 105 vs 98, additive aw/ro, conventional, flash within 15 °C |
| Castrol Hyspin AWS 46 | 60 | same ISO 46, VI 95 vs 98, additive aw, conventional, flash within 15 °C |
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 Named, viscosity index calculator, ISO / SAE / AGMA chart.
Questions
Is Mobil Medium an ISO VG 46 oil?
Yes. The catalogue lists it as ISO VG 46, which is a kinematic viscosity of 46 cSt at 40 °C, plus or minus 10 percent (41.4 to 50.6 cSt). Confirm the current data sheet before you fill a machine.
What is a Mobil Medium equivalent?
Published oils in the same application and grade include Chevron Clarity AW 46, Chevron Hydraulic Oil AW 46, Shell Tellus S2 M 46. 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 Medium 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.
Report a data error
The report is stored for review. It does not change the page by itself, and it is not emailed anywhere yet.