Superior flushing fluid additive to be used before an oil change. Wynn?s Engine Flush, is fast acting and provides extra wear protection while dissolving sludge and oil deposits with a unique anti-wear additive. Flush after just 15 minutes or continue activation for up to 200km?s while you drive. Engine Flush will remove sticky deposits from the pistons rings restoring compression as well as clean out oil channels and galleries to ensure complete lubrication of all working components when oil is replaced Cleans engines internally while providing anti-wear protection Frees sticky piston rings, hydraulic valve lifters, and variable timing systems Removes lacquer, varnish & sludge deposits from the crankcase Restores compression petrol & diesel engines