Hi all.

I had an interesting experience this weekend. I went on a 150 mile trip and kept up with traffic at 80 MPH. On one long uphill stretch  the car started to warm up (3/4 on the gauge) and it never did that before. I pulled over and saw some coolant released from the overflow, so I just raised the hood and let it sit for 20 minutes. I then started it up and the gauge had gone to half, so I re-entered the freeway and completed my journey with no repeat of the heating. When I bought the car it still had the original radiator in it, so I had it rodded and boiled, but not recored. I also replaced the radiator hoses, but could not find a lower one with a spring in it (like they all used to have when new). Now i think I know why the car ran hot (first time in the 3 years I've owned it; high speed and a vacuum in the lower hose that was not offset by a spring in the hose to keep it open. 

So, which manufacturer makes the correct lower hose for our cars that has a spring inside it?



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How old or up to date is the coolant that is in the car now ?


Your hose supplier answer SB along soon 


Thanks. Everything is fine in the cooling system. I'm positive this (cooing hose collapse)  is what happened-I was going up a 2 mile grade at 85 mph in 85 degree weather. Any idea who still makes hoses with springs, or am I going to have to scout junkyards to find one?



Today I got confirmation of my radiator hose spring theory-took the same 150 mile trip at high speeds (75-80) as I took when the engine ran too warm last week, only this time with the spring inserted in to the lower radiator hose. The result: the temp needle stayed at one needle width beyond the first quarter mark (like I remember they did when they were new). Case closed. 

Where did you find the spring?

That's easy: I went to the name I trust for Cadillac parts over all others: the "JasonZone"



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