TECH TALK
LOW SAPS
Low SAPS (Low Sulphated Ash, Phosphorus, and Sulphur) motor oil is a type of motor oil specifically designed with low sulfur and phosphorus content. In the lubricants industry, we call these oils low-emission or low-SAPS oils.
These oils are designed to meet more stringent emissions standards and extend the life of modern exhaust aftertreatment systems, such as diesel particulate filters (DPF) and three-way catalytic converters.
Traditional engine oils use performance-enhancing additives, such as phosphorus and sulfur, which contain anti-wear and antioxidant properties. However, phosphorus and sulfur can damage exhaust aftertreatment systems that are supposed to prevent pollutant emissions.
What does Low SAPS stand for?
‘SA’ stands for Sulphated Ash, ‘P’ for Phosphorus and ‘S’ for Sulphur.
We start with the sulfated ash. This is a mineral residue that blocks the DPF (diesel particulate filter) when phosphorus and sulfur additives are burned in the oil.
Phosphorus and Sulfur are, as mentioned earlier, additives that are added to the oil. Phosphorus is an additive against wear while Sulfur acts as an Antioxidant (prevents oxidation of the oil in the form of sludge). The problem is that when burned, these additives can clog both the DPF (diesel particulate filter) and a GPF (gasoline particulate filter) in vehicles.
HTHS
Less friction in the engine also gives lower fuel consumption and is included in the Low SAPS oils in the requirements package and named as HTHS viscosity. High Temperature High Shear (HTHS) measures the viscosity of an engine lubricant at 150°C and simulates the tight tolerances and high speeds between moving parts in a hot engine. In particular, bearings, the camshaft, piston rings and liner.
ACEA
In both cases, ACEA has set limits on the amount of phosphorus and sulfur that may be used. (Alternative additives are used to ensure a balanced oil composition that provides the same protection).
Modern vehicles are often equipped with sensitive exhaust aftertreatment systems that can be damaged by high levels of sulfate ash, phosphorus and sulfur. Low SAPS oils help protect these systems and maintain their efficiency.
By reducing the content of harmful additives, Low SAPS oils contribute to lower emissions of pollutants such as sulfur oxides and phosphates, helping to meet stricter environmental regulations.
Despite their lower content of certain additives, Low SAPS oils still provide excellent engine protection and performance. They are formulated to minimize wear, oxidation and deposits.
Synmar
Synmar offers a wide selection of high-quality Low SAPS engine oils, including Synmar Orlando 5W-30 engine oil. This advanced formula is suitable for EURO 5 and 6 engines with long oil change intervals due to its strong lubricant film build-up and meets ACEA E9 quality requirements. The latest additives ensure that the emission control system remains in optimal condition.
Tip: If you use AdBlue®, you should also use Low SAPS Engine Oil.
More information:
Would you like more information about Synmar’s low SAPS oils? Then contact us at +31(0) 33-303 3044 or send an email to info@synmar.nl