Some Lexus ES300 owners report experiencing water leaks from the metal type plate on the engine block, which can be attributed to several potential causes. These leaks may stem from coolant leaks originating from the engine block or related components. Additionally, some owners consider using an engine block sealer, such as sodium silicate, as a temporary fix, though it may not provide a permanent solution. It is also recommended to inspect the freeze plugs for signs of damage or corrosion, as faulty freeze plugs may need replacement to stop the leak. Furthermore, some owners find that ensuring the drain plugs on the engine block are properly tightened and undamaged can help prevent leaks. If the issue persists or the cause remains unclear, it is advisable for owners to seek a professional mechanic's inspection for accurate diagnosis and repair.
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