My washer leaks when I use the hot water. I use cold water for both the wash and rinse cycles. I turned the hot water off at the faucet. This prevents the water from leaking out the water hose in the back. Can I safely use it this way? Or, is there a bigger problem that I haven't noticed yet? The machine is a Kenmore top loader and is approx. 15 years old. Thank you in advance.