Experience the ultimate engine protection with Shell Helix Ultra SN 5W-40 engine oil: 4 Litre, now available at Precision Regrinds. This premium oil offers unsurpassed wear and sludge protection, ensuring your engine operates smoothly for longer. It leaves pistons 50% cleaner than the industry standard, enhancing the performance and lifespan of your engine components. Additionally, Shell Helix Ultra SN 5W-40 improves fuel economy and reduces emissions, making it an environmentally friendly choice. Trust the Nelson region's top workshop, with over 15 years' expertise in engine reconditioning, to provide the best care for your vehicle.