winterblazer

I believe that my 98 Outback is suffering from piston slap. I've heard this is a common problem. The dealer tells me it's normal, but I don't believe him. I've read that it gets worse over time and it has. I'm now at 52,000 mi. My question is: How long will it do this before something catastrophic (I need spell check for that one) happens? The car has been troube free to this point and the slap is just annoying at the present time.