Table 1
Composition of typical lubricating oil.
Ingredients wt%
SAE 30 or 40 base oil stock 71.5–96.2
Additives
Metallic detergent 2.0–10.0
Ashless dispersant 1.0–9.0
Oxidation inhibitor 0.5–3.0
Antioxidant/anti wear 0.1–2.0
Friction modifier 0.1–3.0
Pour point depressant 0.1–1.5
Antifoam 2–15 ppm