Castrol Magnatec 5W-30 A Engine Oil 5L 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&rsquo,s Intelligent Molecules ,don&rsquo,t. They cling to the engine like a magnet providing an extra layer of protection. Castrol MAGNATEC&rsquo,s formulation protects from the moment you start, dramatically reducing engine wear*. Castrol Magnatec 5W-30 A is suitable for use in automotive petrol and diesel vehicles where the manufacturer recommends an ACEA A3/B4, API SP or earlier specification 5W-30 lubricant Castrol MAGNATEC. Non-stop protection from every start. * As tested in the industry Sequence IVA wear test. Browse online using our handy Rego Search tool to find the best Castrol oils for your application or come in store today and speak to one of our friendly staff. Changing your oil will also need you changing your oil filter to fully protect you engine and maximise the performance of your Castrol oil. When it comes to Oils and Fluids, the range doesn't just stop at Magnatec, GTX or Edge, Repco stock a range of quality Castrol Grease, Transmission Fluid, Gear Oil, Lawnmower and Motorbike Oil, Marine Oil and Additives all designed to protect and maximise the performance of any application.