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What causes the coolant in the tank to get foamy and bubble?

(1999 Subaru Legacy Outback)
in Mehama, OR on August 15, 2012
I had the radiator replaced several times, recently new timing belt, new water pump and tune up. Headed out for Alaska and it over heated...Another new radiator and another overheating...Now I am told a new head gasket will take care of the problem. Could it be something more?
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Popular Answer
of Greg's Orange Auto on August 16, 2012
very common for head gasket leaks on these , seek diag and est
on August 16, 2012
you could have a blown head gasket
on August 16, 2012
Subaru has had a lot of problems with the head gaskets on the 2.5l. Make sure you have a shop that is experienced with Subaru's do the work.
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