Multifunctional engine oil additive designed to stabilize oil viscosity, help restore oil pressure and reduce oil consumption in high-mileage engines.
Viscosity-stabilizing technology helps reduce oil entering the combustion chamber and supports lower soot and exhaust smoke.
Helps increase the oil viscosity index and support oil pressure in high-mileage engines.
Anti-wear components and stronger oil-film performance help reduce engine wear and support longer service life.
Improved oil-film stability helps support easier cold starts and reduce starting wear.
MANNOL 9990 Motor Doctor is a multifunctional engine oil additive designed to stabilize viscosity, support oil pressure, reduce oil consumption and exhaust smoke, and strengthen oil-film protection in compatible high-mileage petrol and diesel engines.