Castrol Magnatec 5w-40 C3


Instant protection from the moment you turn the key.


Up to 75% of engine wear happens while your engine warms up. When the engine stops oils drain off critical engine parts, however Castrol Magnatec’s intelligent molecules don’t, they cling to the engine like a magnet providing an extra layer of protection ready to protect from the moment you turn the key. Castrol Magnatec’s molecules are always there, always ready, dramatically reducing** engine wear when the most damage happens; as your car warms up. Castrol Magnatec. Instant protection from the moment you turn the key. **As tested against the industry Sequence IVA wear test


Castrol Magnatec 5W-40 C3 is suitable for use in automotive gasoline and diesel engines where the manufacturer recommends an ACEA C3, API SN/CF or earlier specification 5W-40 lubricant. Castrol Magnatec 5W-40 C3 is approved for use in a vehicles from a wide range of manufacturers, please refer to the specifications section and your vehicle handbook. Castrol Magnatec 5W-40 C3 has been specially formulated to deliver outstanding protection for the latest engines fitted with after treatment devices such as diesel particulate filters and 3 way catalysts Castrol Magnatec 5W-40 C3 is approved to *GM dexos2®: supersedes GM-LL-B-025 and GM-LL-A-025 License number (GB2D0115082).


Castrol Magnatec’s Intelligent Molecules:

  • Cling to critical engine parts when the oil drains down
  • Cling to your engine forming an extra layer that protects during start up and beyond;
  • Bond to metal surfaces to make engine parts more resistant to wear;
  • Are combined with synthetic technology to provide increased protection in high and low temperature applications;
  • Provide continuous protection for all driving conditions, styles and temperatures;

Castrol Magnatec 5W-40 C3 delivers superior performance under extreme cold start up conditions

Name Method Units Castrol Magnatec 5W-40 C3
Density @ 15°C, Relative


ASTM D4052 g/ml 0.85
Viscosity, Kinematic 100°C


ASTM D445 mm²/s 13.4
Viscosity, CCS -30°C (5W)


ASTM D5293 mPa.s (cP) 6220
Viscosity, Kinematic 40°C


ASTM D445 mm²/s 81
Viscosity Index


ASTM D2270 None 169
Pour Point


ASTM D97 °C -45
Flash Point, PMCC


ASTM D93 °C 207
Ash, Sulphated ASTM D874 % wt 0.8



BMW Longlife-04

Dexos 2*

Meets Fiat 9.55535-S2

MB-Approval 229.31

Renault RN 0700 / RN 0710

VW 502 00/ 505 00


All packages should be stored under cover. Where outside storage is unavoidable drums should be laid horizontally to avoid the possible ingress of water and damage to drum markings. Products should not be stored above 60°C, exposed to hot sun or freezing conditions.


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