Will Bell Hammer Light be effective on a CB750F with 150,000 km? The engine emits white smoke at idle, which disappears after running at 4,000–5,000 rpm but returns when idling again. Torque and speed feel normal.

Effect of Bell Hammer Light
Bell Hammer Light improves lubrication, reduces friction and wear, and enhances response and quietness by forming a strong lubricating film. However, since the CB750F uses a wet clutch, using this product may cause clutch slippage, so it is not recommended.

About the white smoke
The described symptom—white smoke at idle that disappears during riding and returns at idle—likely indicates oil consumption from worn piston rings or valve seals. In such cases, additives generally cannot resolve the root cause, so internal inspection or part replacement is advised.

Guidance
The Bell Hammer series is mainly intended for automobiles and industrial machinery, not for motorcycles with wet clutches. To keep your CB750F in good condition, please refrain from using this product.