Nulon X-Protect provides excellent everyday protection for a wide range of passenger, 4x4, light commercial, petrol and diesel vehicles. Nulon X-Protect uses premium mineral base oils and additives to protect against sludge formation and corrosion, promoting engine cleanliness and smooth engine performance.Nulon X-Protect 15W-40 Everyday Protection engine oil promotes easier cold-starting, reduces wear and keeps the engine clean between recommended oil drain intervals.