Shell Helix Ultra Professional AT-L 5W-30
Shell Helix Ultra Professional AT-L 5W-30 is a premium fully synthetic motor oil developed to meet the demanding lubrication requirements of modern high-efficiency gasoline and diesel engines. The oil is formulated using advanced synthetic base oils combined with carefully selected additive technology to deliver reliable engine protection, improved fuel efficiency and consistent lubrication performance across a wide range of operating conditions. It has been specifically engineered to meet the technical requirements of modern Fiat engines that require advanced low-viscosity lubricants.
One of the key advantages of Shell Helix Ultra Professional AT-L 5W-30 is its compatibility with modern emission control systems. The oil is designed for engines equipped with diesel particulate filter technology and features a low-SAPS formulation with reduced levels of sulphated ash, phosphorus and sulphur. This helps prevent ash accumulation within particulate filters, maintaining efficient exhaust gas flow and supporting the long-term performance of emission control systems. By protecting these systems, the oil contributes to reliable engine operation and reduced vehicle emissions.
The oil also provides strong protection against engine wear. During engine operation, internal components such as pistons, camshafts and bearings operate under high loads and temperatures. Shell Helix Ultra Professional AT-L 5W-30 forms a durable lubricating film that helps reduce metal-to-metal contact between moving components. This protective film helps minimise wear and contributes to extended engine life while ensuring consistent lubrication performance throughout the oil drain interval.
Another important benefit of the oil is its ability to maintain engine cleanliness. Combustion by-products and degraded oil can accumulate inside the engine and lead to sludge or deposit formation over time. Shell Helix Ultra Professional AT-L 5W-30 is formulated to resist deposit formation and help maintain clean internal engine components. Clean engine internals help support efficient combustion, maintain engine performance and protect critical engine components during extended service intervals.
Shell Helix Ultra Professional AT-L 5W-30 has been specifically developed to meet the Fiat 9.55535-S1 specification. This demanding manufacturer specification requires lubricants to deliver strong wear protection, engine cleanliness and compatibility with modern diesel engines equipped with diesel particulate filter technology. The oil also meets ACEA C2 and API SN industry performance standards, confirming its ability to deliver reliable lubrication performance in modern fuel-efficient engine designs.
The oil is suitable for use in modern gasoline and diesel engines requiring ACEA C2 lubricants and can be used in Euro 5 Fiat diesel engines that require this specification. Its advanced formulation ensures reliable lubrication performance and efficient engine operation under a wide range of driving conditions.
Physical characteristics include a kinematic viscosity of approximately 59.59 mm²/s at 40°C and 10.2 mm²/s at 100°C with a density of around 844 kg/m³ at 15°C. The oil has a flash point of approximately 233°C and a pour point of approximately –48°C, supporting reliable lubrication performance across a wide range of operating temperatures and driving conditions.
