Diesel Clean OSC – Engine

Diesel Clean OSC

Wynn’s® Diesel Clean OSC is a premium product formulated to chemically clean and condition the engine crankcase during an oil change. Wynn’s® Diesel Clean OSC safely dissolves sludge, varnish and oxidized oil deposits decreasing the soot load in the crankcase and increasing the viscosity index of the new engine oil. As oil ages, its ability to protect the engine declines. A conventional oil change leaves contamination behind, compromising the ability of the new oil to transfer heat, lubricate and protect critical engine components. Wynn’s® Diesel Clean OSC leaves your system cleaner than an oil change alone and gives your oil the fresh start it needs to keep your engine running its best.

  • Achieves a More Complete Oil Change
  • Decreases Soot in the Crankcase
  • Anti-wear and Extreme Pressure Agents Protect the Engine During Cleaning
  • Reduces Cross-Contamination of New Oil by Old Oil
  • Removes Sludge and Varnish Deposits
  • Helps Dissolve Old Highly Oxidized Oil
  • Helps Reduce Oil Consumption Resulting from Blocked Oil Drain Return Passages
  • Increases Viscosity Index of New Oil


Product No: ZW12611
Net Weight: 11 FL OZ (325 mL)
Case Quantity: 24 Each

Additional Sizes Available

Product No: ZW12632
Net Weight: 32 FL OZ (946 mL)
Case Quantity: 12 Each

Treat Rate

11 oz. – Treats up to 7 Quarts
32 oz. – Treats up to 16 Quarts


Add contents to used oil in the crankcase and operate engine at idle for 10 minutes. Drain oil while hot. Change oil filter and refill crankcase to vehicle manufacturer’s recommendation.

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