LUBEMAXX ENGINE STOP LEAK is an engine-oil additive formulated with a seal-conditioning component, highly refined base oil, detergent and dispersant technology. It is designed to condition elastomeric oil seals and support seal flexibility within the engine lubrication system, helping address minor oil seepage associated with aged or hardened seals. For use only in engine oil systems where a seal-conditioning additive is permitted. It is not intended to repair mechanically