Nulon Apex+ Heavy Duty Diesel 10W-40 Engine Oil 10L If your diesel spends its life towing, hauling or clocking big kilometres, you need an oil that keeps its cool and keeps you moving. Nulon Apex+ 10W-40 is engineered for heavy-duty work, delivering extended drain confidence so your vehicle runs smoother, cleaner and stronger between services. The Apex+ formulation circulates fast on cold start for instant protection, then maintains a tough, shear-stable film when temperatures climb and loads rise-ideal for stop/start city runs, long highway stints and hot, hard-working conditions. On the job, it fights the build-up that robs power and efficiency. Sludge is kept at bay, while engine and turbocharger deposits are minimised to protect response and boost performance. Excellent wear control under high heat and pressure helps extend component life, and the 10W-40 grade balances quick flow with rock-solid high-temp stability. Low oil consumption means fewer top-ups and less downtime, and it’s fully compatible with modern diesel aftertreatment systems (DPF, EGR, SCR), helping sensors and catalysts stay clean. In a practical 10L pack that suits 4x4s, utes, vans and light trucks, Nulon Apex+ is the reliable choice when you want maximum protection and performance without the fuss.