The impossible to solve overheating problem

So, inertia, why just give a red x? How about state what it is you disagree with?
You don't like Relpax? You saying you can see the hose collapse when at rest?
Speak up, inquiring minds want to know!

I don't explain why I "like, agree, or thanks" for any posts, but you insist on an explanation for a "disagree", - for you, I will. You stated that the lower hose will only suck closed while driving. That is incorrect,. I have seen at least 3 sucked shut in my shop revving the engine. The most memorable one was an old Caddy, the lower hose was so oil contaminated, and soft, even with a pressurized system, it sucked shut, another was a Ford Falcon 6 cyl. I don't remember the third vehicle, just the hose, pass side. All were molded hoses, no spring. That's why you got the big red X. cheers