Engine & Oil Products

No Smoke + Stop Leak

The Original Formula that Prevents Oil Burning, Reduces Smoke and Stops Leaks.

The Problem

A frequent and critical problem in older vehicles is burning oil that causes exhaust smoke and increased emissions. Excessive smoke indicates that oil is getting past the valves and piston rings and into the combustion chamber. Also, over time seals will become dry, brittle and shrink causing oil leaks that can harm the engine or may cause engine failure.

The Solution

BARDAHL NoSmoke® +Stop Leak is a “double-action” synthetic formula that treats both problems. First, a chemical solution reduces oil burning and decreases exhaust smoke by “filling-in” the loose tolerances between the moving parts inside an engine. The extra thick formula seals any spaces between the valves and guides, piston rings and cylinder walls. Second, a seal swell agent restores pliability of the seals, which stops any oil leaks. In addition, NoSmoke® +Stop Leak reduces friction, cushions worn bearings, quiets noisy lifters, improves compression and maintains efficient lubrication to improve the operation of the vehicle.


  • Stops oil leaks and restores seal pliability
  • Prevents oil burning and excessive exhaust smoke
  • Seals empty spaces and reduces friction
  • Quiets noisy lifters and decreases engine noise
  • Lowers emissions and harmful pollutants
  • Improves compression and restores performance



Use at each oil change. Run the engine at idle for 5 minutes to warm the engine. Remove the oil filler cap and pour one bottle of NoSmoke® +Stop Leak™ into the crankcase. Do not overfill. Only add this product to an engine that is running at its normal operating temperature. If smoking occurs between oil changes, maintain the engine by adding a sufficient amount to control smoke emissions. Dispose of any used or unused solution in accordance with the local, state and federal regulations.

Product Specifications

  • Product & Size
    2117 - 16 oz (473 ml)
  • Case Qty/Wt
    12 / 12 lbs
  • UPC Code
    0 76906 02117 3
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    Bardahl Manufacturing Corporation

    P.O. Box 70607 Seattle, Washington  98127
    1400 N.W. 52nd Street, Seattle, Washington  98107

    Phone: (888) 227-3245
    Fax: (206) 784-3219
    Customer Service: (888) 227-3245

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