Semi Synthetic

API Performance Level

CH-4 / SJ

SAE Viscosity Grade



1L, 4L, 5L, 20L, 25L, 208L


Momenta RX9 semi synthetic is heavy-duty diesel engine oil which helps to protect against the buildup of piston deposits for continuous engine efficiency. It exceeds performance limits in piston ring, cylinder liner and valve train wear tests for long engine life.


  • Improved oxidation stability to minimize deposit formation
  • Higher TBN to extend protection from acids caused by combustion
  • Better protection against valve train wear
  • Improved low temperature performance
  • Potential fuel economy improvement compared to conventional CH-4 heavy duty engine oils


These heavy duty engine oils are recommended for all types of diesel and gasoline engines where the manufacturer specifies the API
service CH-4/SJ. They are especially suited for use in low temperature environments where extreme pumpability properties are required.
These Oils are also suitable for on-road and off-road applications, including equipment that are exposed to extreme low temperature
operations. This oil is suitable for use in moderate to high sulfur content fuel.