SYNPLUS 10W50 SN-Full Synthetic Engine Oil 20LT

Increased heat which accelerates the rate of oil oxidation, nitration and deposit formation. This degrades the oil and encourages the creation of more acid and increases viscosity.
Increased pressure and speed which makes it harder for the oil to maintain a lubricant film to prevent metal on metal contact. This accelerates valve train wear.
Emission Control. Most of today’s petrol engines are fitted with catalytic converters which reduce emissions of CO, NOx and unburned carbon. Catalytic converters, however, are susceptible to SAPS (Sulfated Ash, Phosphorous and Sulfur) which are present in engine oil detergents and antiwear additives and in base oils.