
We are pleased to announce an important milestone: motor oil MEGA SYNT 15W-40 Received official approval for API Service Category CK-4 and meets American Petroleum Institute requirements. This confirms the highest quality and compliance with the latest standards for heavy-duty diesel engines.
What is an API?
API (American Petroleum Institute) – The American Petroleum Institute, a leading organization that sets standards for the oil and gas industry. API certification ensures that motor oils meet stringent performance and engine protection requirements.
What do the designations API Service Category CK-4 and Classification CI-4 PLUS mean?
- API CK-4: This specification is designed for modern heavy-duty diesel engines, including engines that meet Euro V and VI standards, as well as older models. CK-4 oils provide improved protection against oxidation, wear, deposits, and viscosity loss, especially with extended oil drain intervals and severe operating conditions. They also enhance protection against oil aeration and shear loss.
- CI-4 PLUS Classification This specification indicates the oil's compliance with additional requirements, including improved soot protection, viscosity stability, and high-temperature oxidation protection. CI-4 PLUS oils are suitable for a wide range of diesel engines, including those with exhaust gas recirculation (EGR) systems.
MEGA SYNT 15W-40:
- Specifications: SAE 15W-40, API CK-4, SN, ACEA E7, E9, JASO DH-2
- Meets requirements Mack EOS-4.5, Renault VI RLD-3, VOLVO VDS-4.5, Caterpillar ECF-3, Cummins CES 20081, CES 20086, Detroit Diesel DDC 93K218, DDC 93K222, Deutz DQC III-10 LA, IVECO, MAN M 3275, M 3575, MB 228.31, MTU Type 2.1
- Description: A high-performance all-season motor oil for modern diesel engines, including those equipped with exhaust aftertreatment systems (DPF, DOC). It provides extended oil change intervals and reliable performance under severe operating conditions.
You can find the full list of YUKOIL oils with API licensing at at the link.
YUKOIL – the principle of primacy!


