Car Engine Oil

Castrol Magnatec Professional A3 5w-40


Castrol Magnatec Professional A3 5w-40 Instant Protection For Your Engine


Castrol Magnatec Professional’s intelligent molecules protect from the moment you turn the key. They cling to the engine like a magnet providing an extra layer of protection, dramatically reducing engine wear. Castrol Magnatec Professional’s unique formulation delivers protection you can see, hear and feel.

With microfiltration technology, it’s engineered for today’s modern engines. Castrol Magnatec Professional. Instant protection from the moment you turn the key.  As tested in the industry Sequence IVA wear test.


Castrol Magnatec Professional A3 5W-40 is suitable for use in automotive gasoline and diesel engines where the manufacturer recommends an ACEA A3/B4, A3/B3, API SN/CF or earlier specification 5W-40 lubricant.

Castrol Magnatec Professional A3 5W-40 is approved for use in vehicles from a range of leading manufacturers, see the specifications section and your vehicle handbook.


Castrol Magnatec Intelligent Molecules:

– Cling to critical engine parts when the oil drains down
– Cling to your engine forming an extra layer that protects from the moment you turn the key;
– Bond to metal surfaces to make engine parts more resistant to wear;
– Provide continuous protection for all driving conditions, styles and temperatures.

Deliver superior performance under extreme cold start-up conditions and relative to thicker grades

NameMethodUnitsCastrol MAGNATEC Professional A3 5W-40
Viscosity, Kinematic 100C


ASTM D445mm²/s13.8
Viscosity, CCS -30C (5W)


ASTM D5293mPa.s (cP)6180
Viscosity, Kinematic 40C


ASTM D445mm²/s83.4
Viscosity Index


ASTM D2270None170
Pour Point


ASTM D5950°C-39
Flash Point, PMCC


ASTM D93°C210
Ash, Sulphated


ASTM D482% wt1.18
Density @ 15CASTM D1298g/ml0.8531

ACEA A3/B3, A3/B4
MB-Approval 226.5/ 229.3/ 229.5
Renault RN0700 / RN0710
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, or exposed to hot sun or freezing conditions.

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Castrol Magnatec Professional 5w-40 A3 Synthetic Engine Oil with Dualock technology.
12 x 1L
4 x 4L

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