Extended oil change intervals, smaller oil sumps, inadequate fuel quality, lean burning engines. All this leads to the formation of the dreaded black sludge in modern engines. The highly effective detergents and dispersants dislodge the sludge and lacquers, and keep both solid and liquid contaminants in suspension until they are drained with the old motor oil. Formerly called Motor Clean
Last 5 in stock, then no longer available.