SMART-O plug is the most advanced oil drain plug in the market, offering unique advantages of regular Oil Drain Plugs. Your car and the environment deserve the safest and best performing components. Car owners are familiar with oil loss horror stories, where sump plug / Oil Drain Plugs fail due to mismatching, under tightening or overtightening. This often results in damaged oil pans, sudden oil loss, costly engine replacements and complicated insurance claims. Save yourself the hassle and enjoy driving with the ultimate oil drain safety system.