In day to day, stop/start driving it is not uncommon for modern technology engines to consume small amounts of engine oil between services. Keeping your engine oil topped up is very important to ensure you avoid expensive wear or damage. Nulon Full Synthetic Petrol Engine Top-Up oil is the simple way to top up your engine and keep you on the road. The multi-use formula is safe to use as a top up in all petrol engines that require a Full Synthetic 5W-30, 5W-40, 10W-30 and 10W-40 viscosity oil is used. Nulon Full Synthetic Petrol Top Up is designed for use in top-up applications between recommended oil change intervals. If a complete engine oil service is required either add your vehicle to My Garage or check with your manufacturer, vehicle user manual, your local mechanic or head in-store and talk to one of our friendly team to find the correct oil type and viscosity suggested for your vehicle;.