Castrol Magnatec 10W-40 is a semi synthetic ACEA A3/B4, API SN/CF engine oil which protects and cleanses your engine using Castrol Magnatec intelligent molecules which cling to the engine like a magnet providing an extra layer of protection. Castrol Magnatec’s unique formulation protects from the moment you turn the key, dramatically reducing* engine wear. Now with ultra-refined molecules, for protection you can see, hear and feel. Castrol Magnatec. Instant protection from the moment you turn the key.
*As tested in the industry Sequence IVA wear test.
Did you know?
Unlike your run-of-the-mill lubricants which run off the engine block once the vehicle is switched off, Castrol Magnatec remains firmly attached like a magnet so even during non-use periods and ignition procedures your car remains fully protected.
What vehicles is this product suitable for?
Castrol Magnatec 10W-40 is suitable for use in automotive petrol and diesel engines where the manufacturer recommends an ACEA A3/B4, A3/B3, API SN/CF or earlier specification 10W-40 lubricant.
To find the oil type and weight suggested for your vehicle; either check with your manufacturer, your local mechanic or head in-store and talk to one of our friendly team.
5 Litre
10W-40
API SN/CF
ACEA A3/B4
Semi Synthetic
Intelligent molecules dramatically reduce engine wear at start up
Protects during all driving conditions, styles & temperatures
LINK for recommended Castrol oils for your vehicle. Thanks to Cheap Charlie
Please understand this is a cheap oil.
If you drive aggressively or have any form of performance vehicle, I'd avoid it.
Its not that it lies per se, it's that every UOA I've seen of it is garbage.
Feel free to do your own research.
BITOG forums are a very good resource for tests on this oil.
Oil is just a pressurized film layer, so technically ANY oil would work so long as you don't tear the film.
So in saying this, if the choice is between service for cheap vs. skip a service; do the service.
It'll also be fine for Nannas corolla that never see's above 3000rpm. (so really, almost all Auto transmission vehicles)
10w40 is a fine thickness for almost all vehicles in Australia; we don't get cold enough to worry about much thinner.
tldr;
Buy this if you're feeling poor, and you need a service.
Also buy this if you drive a 'slow car' whos engine normally wont see high RPM or stresses (towing, mountains etc)
Otherwise, Shell Helix, Penrite HPR5, or Nulon, are all better options around this weight.