Diesel Engine OST (Oil System Treatment)

Diesel Engine Treatment

SKU: ZW82011 Category:
Packaging Information:

11 FL OZ / Case of 24 Ea.

32 FL OZ / Case of 12 Ea.


Wynn’s® Diesel Engine OST (Oil System Treatment) is a professional engine oil treatment developed to improve the power and performance of the Diesel Engine. Diesel engines demand high performance lubrication. Stop-and-start driving, extended idle times, and transporting heavy loads pushed oil to the limit. A diesel engine also requires specialized chemistry to provide enhanced wear protection. This exceptional product improves oxidation stability protecting against breakdown of the engine oil and helps to extend engine life. Wynn’s® Diesel OST offers exceptional soot dispersancy, reduces friction and wear, resists acid and sludge formation, improves fuel efficiency, and provides extra protection until the next oil change.

  • Enhanced Wear Protection that Helps Extend Engine Life
  • Reduces Deposits & Acid Formation
  • Provides Excellent Soot Dispersancy
  • Meets the Latest API Diesel Engine Oil Performance Specifications
  • Improves Oxidation Stability
  • Increases Fuel Efficiency by Allowing Moving Parts to Slide with Ease
  • For Use in Synthetic and Conventional Diesel Engine Oils



11 oz. – Treats up to 7 Quarts

32 oz. – Treats up to 16 Quarts


Add contents to engine crankcase at each oil change. Can also be added once between changes as a supplement.

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