Mobil Delvac 1640
Mobil Delvac 1640 is a high-performance monograde diesel engine oil formulated using advanced base oils and a balanced additive system to provide dependable protection in demanding operating conditions. As part of the Mobil Delvac 1600 Series, it is designed for naturally aspirated and turbocharged diesel engines operating in both on-highway and off-highway environments. The formulation ensures consistent performance where monograde lubricants are specified, making it suitable for a wide range of heavy-duty applications.
One of the key advantages of Mobil Delvac 1640 is its excellent protection against oil thickening and deposit formation. Diesel engines operating at high temperatures can experience sludge build-up and oil degradation. Mobil Delvac 1640 is engineered to resist these effects, helping maintain engine cleanliness and ensuring efficient operation over extended service intervals.
Mobil Delvac 1640 also provides strong wear protection for critical engine components. The advanced additive system helps protect pistons, rings and cylinder liners from wear, contributing to extended engine life. It also offers excellent protection against ring sticking, ensuring consistent performance and reducing maintenance requirements.
Another important benefit of Mobil Delvac 1640 is its extended Total Base Number (TBN) reserve. This helps neutralise acids formed during combustion, particularly when using higher sulphur fuels. By controlling acid formation, the lubricant protects engine components from corrosion and supports long-term durability.
Mobil Delvac 1640 also delivers effective corrosion protection and resistance to oil degradation. The formulation helps protect internal engine components from rust and corrosion under severe operating conditions, ensuring reliable lubrication and long service life.
Mobil Delvac 1640 is recommended for use in naturally aspirated and turbocharged diesel-powered equipment, including on-highway trucks and off-highway machinery used in construction, mining, quarrying and agriculture. It meets performance requirements including API CF and is suitable for applications requiring ACEA E2, Allison C-4, MTU Oil Category 2 and MAN 270 specifications.
Physical characteristics include a kinematic viscosity of approximately 132 mm²/s at 40°C and 14.7 mm²/s at 100°C, with a viscosity index of around 112. Mobil Delvac 1640 has a density of approximately 0.89 g/cm³ at 15.6°C, a flash point of approximately 239°C and a pour point of approximately −21°C. The oil also provides a Total Base Number of approximately 12 mgKOH/g and a sulfated ash content of approximately 1.4%, supporting reliable engine protection and performance across a wide range of operating conditions.
