BARDAHL ALL-U-NEED! NoSmoke is an effective chemical solution that reduces oil burning and decreases exhaust smoke by "filling-in" the loose tolerances between the moving parts inside an engine. The extra thick formula is very effective in sealing the spaces between the valves and guides, piston rings and cylinder walls. This solution reduces friction, cushions worn bearings, quiets noisy lifters, improves compression and maintains efficient lubrication.