Castrol Magnatec DX 5W40 Engine Oil Castrol Magnatec Diesel DX 5W-40 engine oil uses DPF compatible technology with intelligent molecules for an extra layer of protection, reducing wear during the critical warm-up period. Its unique formulation protects from the moment you start, dramatically reducing engine wear. Metal on metal contact is the enemy of any engine and lubrication and oil coverage of internal moving parts is critical. Castrol have developed their range of Magnatec engine oil to cling tenaciously to your engine components even when the engine is off to provide that level of protection that other oils don't. Offering instant lubrication as soon as you turn the key, Castrol Magnatec's intelligent molecules are present throughout all driving conditions to dramatically reduce engine wear and provide vital protection. For as long as many of us remember, cars using Castrol products and adorned with iconic Castrol livery have dominated motorsport. Whether it be Larry Perkins winning Bathurst in '93 in his VP Commodore or Victor Bray chasing down quarter mile records in his '55 Chevy Doorslammer, Castrol have been at the forefront of oil and lubricant research and development. Forged in the heat of battle, Castrol lubricants have helped power WRC Celicas and GT series Supras to wins in some of the most competitive and gruelling motorsport competitions. It is with this knowledge and experience that you know you are using the best when you use Castrol oils and lubrication in your vehicle. Trusted by top level motorsport teams and with a presence in Australasia for over 100 years you can rely on Castrol to protect and enhance the performance of your vehicle. 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 engine 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.