I replaced the timing belt in my '92 Legacy and I noticed a fluid leak in around the tentioner area. It's an older car and I'm not sure if it came from the tentioner or not. I got it running but I'm wondering now if the tentioner is bad. How do they go bad, do they leak and if it is bad what will it do to the timing? It's a $100 part for a car with 165,000 miles.