SX310 sx310 ENGINE OIL STOP LEAK SCIENTIFICALLY FORMULATED TO STOP OIL LEAKS IN ALL RUBBER ENGINE OIL SEALS AND GASKETS THAT HAVE BECOME DRIED OR CRACKED. WHEN ADDED TO ENGINE OIL, IT WILL EXPAND AND REJUVENATE ALL RUBBER ENGINE OIL SEALS AND PREVENT COSTLY ENGINE REPAIRS.j100 J100