GM dexos2™
GM dexos2™ oils are Top Tier lower SAPS¹ lubricants designed for use in high performance gasoline and light duty diesel engines where advanced aftertreatment systems such as Diesel Particulate Filters (DPFs) are used.
GM dexos2™ oils are typically high HTHS (≥ 3.5cP) SAE 5W-30 and 5W-40 based on API Group III base oils.
The main physical and chemical requirements for GM dexos2™ oils are shown below:
| Requirement | Method | Unit | Limit |
| HTHS viscosity | CEC L-36-A-90 | cP | ≥ 3.5 |
| Sulphated Ash | ASTM D874 | %wt | ≤ 0.8 |
| Phosphorus | ASTM D4951 | mg/kg | 700 to 900 |
| Sulfur | ASTM D4951 | mg/kg | < 3500 |
| Evaporation loss (NOACK) | CEC L-40-A-93 | % | ≤ 13.0 |
| Total Base Number | ASTM D2896 | mgKOH/g | ≥ 6.0 |
Note 1: SAPS refers to Sulphated Ash, Phosphorus and Sulfur, the levels of which are often restricted in the latest performance specifications.
GM dexos2™ is usually coupled with a range of different combinations of other approvals depending on the viscosity grade of the lubricant, The most frequently seen approvals claimed in conjunction with GM dexos2™ being ACEA C3, BMW Longlife-04, Volkswagen 50500/50501, Porsche C30 or A40 (5W-40 only).
For more information on GM dexos2™ oils, contact your Lubrizol representative.
For a deeper dive into specifications, see the Lubrizol Ready Reference Guide, the industry's go-to resource for understanding fuel and lubricant performance principles and requirements.