I hate to say it but I can promise you that the car was like this before you bought it, this is standard script that I just read. it was likely traded in for this very reason, that's the norm - people are more likely trade in cars that have issues creeping up, not perfectly running brilliant specimens. This makes dealerships the hands down worst place to buy a car because the most likely place for a car with issues to end up is in a dealer lot...trade in - off to auction/trade/partner/sell - dealer lot. If you buy a car from someones driveway at their home with their kids running around - that's likely to be a good deal and good car, they don't want a miffed owner coming back. That's the best deals out there private owners, better maintenance records, feedback, honesty, and cheaper.
so this is a 4 cylinder? those do have headgasket issues, but they don't overheat until they're run low on coolant.
if it's low on coolant find out where the coolant is going.
is there a leak and is it one of the headgaskets?
if it is HG's leaking externally - replace the coolant and add two bottles of Subaru conditioner (one is required for your car).
when the valve cover gaskets were replaced - did you have the valves adjusted? They are super easy to do.
do some reading on running some cleaners through the fuel system and Sea Foam through the intake.
problem with buying from dealers is they know nothing about a car. buy from private sellers in the future, get much better deals that way.
unfortunately 10 year old cars need maintenance - and plugs and gaskets are maintenance items, not unexpected failures. if you wanted full on coverage for any thing that could happen it would cost a LOT of money for a 10 year old vehicle.
in general those aftermarket warranty's are not that stellar in coverage and can be a hassle to deal with. front end loading to make a better informed purchase is a better use of resources over those warranty's.
so this is a 4 cylinder? those do have headgasket issues, but they don't overheat until they're run low on coolant.
if it's low on coolant find out where the coolant is going.
is there a leak and is it one of the headgaskets?
if it is HG's leaking externally - replace the coolant and add two bottles of Subaru conditioner (one is required for your car).
when the valve cover gaskets were replaced - did you have the valves adjusted? They are super easy to do.
do some reading on running some cleaners through the fuel system and Sea Foam through the intake.
problem with buying from dealers is they know nothing about a car. buy from private sellers in the future, get much better deals that way.
unfortunately 10 year old cars need maintenance - and plugs and gaskets are maintenance items, not unexpected failures. if you wanted full on coverage for any thing that could happen it would cost a LOT of money for a 10 year old vehicle.
in general those aftermarket warranty's are not that stellar in coverage and can be a hassle to deal with. front end loading to make a better informed purchase is a better use of resources over those warranty's.