I'm confused! Happens often now-a-days. Anyway, what is bypassed by the "bypass hose"? Seems like the water pump but how is this bad after the thermostat opens? Seems like it's there to send warmer water to the thermostat to cause it to open earlier. Is the water pump there to pump water into the block? Could someone give me a simple (possibly stick diagram) of the water flow and how the bypass hose works? I've seen posts where the bypass hose flow is restricted. What advantage is this? Thanks!