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:
|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.