The car: 1996 Legacy, 90,000 miles, 4EAT transmission, new plugs at 60k, new fuel filter at 70k.
Symptoms: Loud metal on metal clanking sound when driving up steep hills. The sound is like the sound of a crinkling can but repetitive. Only happens up hills when RPMs are slowing because of increased load from road grade steepening. If I let up on the gas the sound stops and if I floor it and the transmission shifts down the sound stops. The sound is audible with the windows up and is very loud. It sounds like the engine is going to fall apart!
I just bought the car and used 87 octane on the first fill. The second tank i used 93 octane and am still getting the sound when pushing a bit uphill.
Anyone have any idea?