Owners' Stories

my subaru has lasted me the last four years. i love driving it and it handles fairly well in the snow. but in the last two years i have noticed when i go up hills it seems that the car wants to die and break down under the preasure. if i down shift up the hill it seems to help as long as the RPMs r high enought. but if im in first gear i cant do enything but rev the car up the hill. what part is fouling? o2 cencer? a foul plug? i just dont know