Question about 2001 Subaru Forester

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Top radiator hose collapses since a recent cooling system service. It has never done this before. The service manager says this is normal. Also they put in almost pure anti-freeze. What will this do?

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Antifreeze should be mixed to a 50/50 solution. Never straight antifreeze.

It is possible that before your system was worked on it did not have the circulation to collapse the hose. Usually hoses would have a metal spring in them to maintain the shape of the hose or the hose would be molded with Ribs to strengthen the shape of the hose.
See if Autozone, Oreillys, or NAPA list a hose for your car and ask for one with Ribs on it. Get a cheap antifreeze gauge or let Autozone test the water for the mixture.

Posted on Oct 07, 2009

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Some hoses require a spring to be inside. upper hose usually is outlet and generally don't collapse except when cooling down. All engines need a 50/50 antifreeze mix. too much will lower freezing point but will also lower boiling point. Check can be done with an inexpensive tester. (less than $5.00) Your antifreeze may not be "overdone" as you haven't figured on water in the block mixing with new stuff. so check on your own before yelling at anyone!

Posted on Oct 07, 2009

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Posted on Jan 02, 2017

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