I will add a good source of info on headgaskets in non turbo 2.5L subaru is here-> http://allwheeldriveauto.com/subaru-head-gasket-problems-explained/
I will add a good source of info on headgaskets in non turbo 2.5L subaru is here-> http://allwheeldriveauto.com/subaru-head-gasket-problems-explained/