Oil leak Question

[Super Bon Bon]

I have a 1991 240sx hb I have not driven the car in over a two years.I drove the car down to get some fuel and drove it back to my house where I let it sit idle for around ten minutes. I noticed that oil was dripping from around the bottom pulley, If I would guess I would say about for or five ounces. I cleaned the engine and started the car up again and let it idle I could see oil forming at the oil pan lip but could not see if it was coming from the front seal, now the amount of oil that is leaking is small compared to what it was before I cleaned it. I guess my question is what is more likely to go first , the front seal or the pan gasket?

Thanks:help

[NISTECH]

front seal if its doing it at idle not moving. the oil doesn't contact the oil pan lip at a rest. also look at the side of the front cover near the bottom very closely as well they can leak from there to.