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TU5 engine is losing water but no obvious leaks from the hoses? One possible cause could be rotting or punctured cylinder fins. In this video, we find the location of the water leak from behind the cylinder, remove the rotten fin, clean and prepare the installation site, and install the new fin correctly. In this tutorial, you will see: 🔧 Reasons for TU5 engine losing water 🔧 Identifying a leak from the fin behind the cylinder 🔧 The difference between a fin leak and a hose failure 🔧 Opening parts to access the fin 🔧 The correct way to remove a rotten fin 🔧 Cleaning and preparing the installation site 🔧 Sealing and installing a new fin 🔧 The importance of using antifreeze to prevent corrosion 🔧 Sealing parts and bleeding the cooling system 🔧 Lack of proper antifreeze can cause rust and corrosion of engine fins. The washer itself is not an expensive part, but replacing it may require removing various parts from the engine. If your car is losing water, have a mechanic check the exact location of the leak before replacing parts on a guess basis. Is your car also losing water without any apparent leaks? Write the car model and its symptoms in the comments. ⚠️ This content is educational. Repairing the cooling system and replacing the engine washer should be done in a safe manner and by a professional. #TU5_Engine #Lowering_Water #Cylinder_Washer