What is a good oil additive to help stop engine tapping?

A good oil additive to help stop engine tapping is a high-quality engine oil supplement that contains additives like zinc or molybdenum, which help reduce friction and wear. Products such as Lucas Engine Oil Stop Leak or STP Oil Treatment can also be effective in conditioning seals and enhancing lubrication. It's important to ensure compatibility with your engine oil and follow the manufacturer's recommendations for use. Additionally, addressing the underlying cause of the tapping, such as low oil levels or valve adjustments, is crucial for a long-term solution.