Filthy engine oil with sludgeFlushing Oil ConcentrateManufacturers of many modern passenger car and light truck engines recommend extended oil drain intervals – 12,000 to 15,000 miles is not uncommon. It’s almost impossible for these engines to operate for such extended intervals without forming engine-destroying sludge in the lubricating system. The solution to this problem is to use Flushing Oil Concentrate at every oil change – a very small cost compared to the costs of engine damage due to inadequate lubrication caused by sludge and other contaminants in the engine oil. Find out more here…

problem solved!