Review on Red Line 81403 Engine Break-In Oil, 16 oz., Single Pack by Juan Huerta

Good stuff! I have a high mileage 292 inline six. The knocking of the rod developed. Actually I bought the product to use in a recently rebuilt engine to replace one that is knocking. I decided to add it to the engine knock oil and the knock is barely audible. In addition, the engine runs much more smoothly. Haven't noticed any increase in fuel consumption. If I have time I will disassemble the engine. I wonder if the reason for the knocking is in the connecting rod bearings? When this is the case the product offers some increased lubricity which reduces noise.