Varnish, sludge and thickened engine oil in the crankcase and lubrication system can result in sticking hydraulic lifters and valves, restricted lubricant supply, partial seizure between piston and cylinder walls, crankshaft and camshaft journals and bearings. This may result in cranking overload, scoring of cylinder walls or total seizure of the engine.


  • Quickly and safely dissolve sludge and varnish deposits throughout the lubrication system.
  • Allows the deposits to be removed when the engine oil is drained from the crankcase.
  • Meets and exceeds OEM service requirements.


APPLICATION: With engine running at idle, add Crankcase Cleaner directly to crankcase oil, immediately before draining. Product works best if engine is at operating temperature. Allow product to circulate with engine oil for maximum 10 minutes. Shut off engine and drain Crankcase Cleaner out of the oil pan with the engine oil install new oil and oil filter.
Do not drive vehicle with Crankcase Cleaner in the oil.