Can Changing Oil Solve the Problem of Static Water Ingress in the Transmission?

[EdenLynn]

For static water ingress in the transmission, it is essential to consult a professional transmission repair technician for timely inspection and repair. Transmission water ingress can be categorized into three levels of severity: Severe water ingress can be identified by observing the mixture of oil and water; moderately severe water ingress can be directly observed by draining the oil. For minor water ingress, some screws inside the transmission may rust, requiring disassembly to inspect the internal screws. Since the mixture of oil and water can corrode steel screws, if rust is found on some screws after suspected water ingress, it can be concluded that the transmission has minor water ingress, and the water content is likely minimal. For different levels of transmission water ingress, the following repair recommendations apply: Severe water ingress requires replacing rubber components such as gaskets and seals. Moderate water ingress necessitates the replacement of friction plates, seals, and other parts, along with a complete change of transmission oil and differential oil. For minor water ingress, it is advisable to replace the transmission oil and differential oil.