ALTUM™ SERIES
ExxonMobil basestocks , United States
Product Description
ALTUM™ base stocks by ExxonMobil are designed for performance capability in a range of finished lubricant applications. ALTUM™ base stocks by ExxonMobil comprise a Group III slate as defined within API and ATIEL guidelines for formulation and qualification of automotive lubricants. With base oil interchange and viscosity grade read-across capabilities, ExxonMobil's ALTUM™ base stock slate offers broad coverage, enabling supply chain flexibility and simplified qualification testing requirements. ExxonMobil follows rigorous processes to ensure reliable delivery of consistent quality base stocks so customers can be confident in their base stock supply.
Features and Benefits
ALTUM™ base stocks deliver qualities that enable our customers to produce high performance blends. Key features include:
• Tightly controlled volatility and viscosity index (VI) specifications enabling formulations to meet API, ACEA and ILSAC requirements.
• Strong low-temperature performance and oxidative stability enable robust performance of finished lubricants across various applications.
• Product specifications that enable formulators to meet passenger and heavy-duty engine oil quality requirements.
Specifications
| Property | Standard Method(a) | Limits | ALTUM 4 | ALTUM 6 |
| ASTM Color | ASTM D1500 | Max | L0.5 | L0.5 |
| Appearance | Visual | Clear and Bright | Clear and Bright | |
| Cold-Cranking Simulator, Apparent Viscosity @ -35 C, mPa.s | ASTM D5293 | Max | 3,000 | 10,000 |
| Flash Point, Cleveland Open Cup, °C | ASTM D92 | Min | 200 | 210 |
| Kinematic Viscosity @ 100 C, mm2/s | ASTM D445 | Min-Max | 4.10-4.40 | 5.9-6.3 |
| Noack Volatility, Procedure B, mass% | ASTM D5800-PROB | Max | 15.0 | 7.5 |
| Pour Point, °C | ASTM D97 | Max | -18 | -18 |
| Viscosity Index | ASTM D2270 | Min | 120 | 122 |
Note 1: Products are certified on release to meet the values specified. Actual values may deviate within the established reproducibility of the test method specified.
Note 2: For purpose of determining conformance with specification, observed or calculated values shall be rounded off to the nearest unit in the last significant digit used in expressing the limiting value in accordance to the ASTM E 29 method
(a) In lieu of standard test method, alternate test methods may be used for the certification of a product property.
Health and Safety
Health and Safety recommendations for this product can be found on the Material Safety Data Sheet (MSDS) @ http://www.msds.exxonmobil.com/psims/psims.aspx
All trademarks used herein are trademarks or registered trademarks of Exxon Mobil Corporation or one of its subsidiaries unless indicated otherwise.
02-2026