What is Varnish?
Varnish is the buildup of oil degradation products that sticks to the internals of lubricating and hydraulic oil systems. Due to the ever-increasing requirements on equipment tolerances, efficiency and the industry’s move to Group II base oils, varnish has become a major issue throughout the industrial world.

Varnish Effects

  • Valve “stiction” – stick and slip
  • Increased wear in critical components
  • Costly pump damage
  • Reduced product integrity
  • Increased scrap rate
  • Down time due to valve and pump repair
  • Increase bearing and oil temperatures
  • Start-up failures
  • Oil degradation

Varnish Mitigation Sell Sheet