Recently when I had some work done I was shown a minor leak, I believe he told me it was the oil pan. It doesn't drip out onto the ground, but if you look closely you can see condensed oil drops on the side of the block.
I recently noticed that the car is using 10W30 oil from the previous owner, but the manufacturer recommends 5W30 (94 Integra). Will this cause this leak to be a larger issue or possibly be harder on the engine? I've heard some people say that it's better to run thicker oil on older cars both to help seal any leaks and cause better performance/car life.