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on my 06 my upper rad . hose seems too get very hard never notice on other trucks i had. no leaks what so ever i just want to be safe
 

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That is normal for most vehicles when they get up to operating temperature, the cooling system operates at about 13 psi.

If your truck is at operating temperature and the hose is still soft then you have a problem in your system ;)
 

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Another post on hard hoses......hehe. My hose gets hard when pressures up too.

Sent from my phone that somebody didn't help me get.
 
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