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.