Wonder why the water pump hose is 5/8 and the engine hose is 3/4. I have ordered 2 shut-off valves. One is used at firewall near heater and the other screws directly into water pump. I will probably go with the one at the water pump. Also will use new hoses. Curious...do you believe black pepper or a store bought stop leak product ever actually work? I noticed a little wet spot on my radiator in front of the fan. Thanks, ray
