10W-40 Oil

Choose the right 10W-40 oil for your engine.


RRP - $41.99

Castrol MAGNATEC’s intelligent molecules cling to your engine and protect it when it’s needed most – during warm-up when up to 75% of engine wear occurs. Castrol MAGNATEC’s unique formulation protects from the start, dramatically reducing* engine wear to keep it running smoothly.

Castrol MAGNATEC – Instant Protection From The Moment You Start.
* As tested in the industry Sequence IVA wear test.
Castrol MAGNATEC 10W-40 is a part synthetic engine oil formulated to suit a wide range of petrol engines, direct and indirect injection diesel engines, LPG and CNG cars, light commercial vehicles and 4WDs.

Castrol MAGNATEC’s Intelligent Molecules bond to metal surfaces to make engine parts more resistant to wear to provide increased protection in high and low temperature applications, providing continuous protection for all driving conditions, styles and temperatures.  Now with ultra refined molecules for protection you can see, hear and feel.


Castrol MAGNATEC 10W-40 is formulated for all types of passenger, 4WD and light commercial vehicle engines - petrol, diesel or gas, old or new, turbocharged or naturally aspirated.


Castrol MAGNATEC 10W-40 is recommended where the following current and superseded classifications and performance fuels are cited.

American Petroleum Institute API Service Classification:
  • Petrol: SN (SM, SL, SJ, SH and all superseded classifications)
  • Diesel: CF
  • European ACEA:
  • Petrol: A3
  • Diesel: B4
Is Magnatec 10W-40 right for your car? Find out with Castrol Oil Selector.