Hi, I have a 96 legacy outback. auto trans. 200,000 miles. Was on a trip and it really didn't get driven for a month and a half save for a couple times around the block. sat under a car port but it was raining hard. Upon returning, about .5mi into the drive around a left hand corner, almost all power cut out, IE 20 mph almost floored without high rpms that would make me think think transmission. filled up, (car was stored low on gas) put a bottle of heet in it (the yellow kind) thinking maybe I had gotten some water in the fuel. Next day same problem almost, around the corner. eventually came into it and If I got to 60 mph, it was fine to keep it there. two days later, tok an extra crank to start compared to usual, and same issue but worse. was fine after. Checked oil, trans. fluid. all fine.
However, and a big however is there was a good amount of oil in the coolant reservoir. which makes me think head gasket possibly, esp. given the issues with these and subaus. Car has never over heated and there is no white smoke out of tail pipe. local mechanic seems sure it is the head gasket and wants a lot to fix, But I have some concerns given the driving issues, thinking it seems more along the lines of a fuel delivery issue, be it some bad fuel still in there possibly. Not exited to dump a ton of money into a high mileage car for the head gasket and still have an issue, esp. since I just put $1,000 into a abs unit, master cyl. and brakes this summer. any feedback would be appreciated.