Have had my new Forester (had WRX) a little over a month. So far really like it. However, have noticed the engine pinging a little when driving on a fairly level road and then starting into a very slight upgrade. This occurs mostly in 4th or 5th gear with and without cruise on.
I live in Washington state so we have a lot of these slight uphills. Have tried various brands of gas and they all appear to do the same thing. Trying Chevron now and so far so good.
Took a trip to Teton a couple of weeks ago and the pinging stopped while we were there; even using the 85 octane gas they sell in Wyoming.
Has anyone had similar problems? Any solutions?
TIA