Nissan Altima: Nissan Altima 96.. excessive oil leaks around the engine

Dear all,

This Altima is 96 GXE, its has 139K miles on it and runs great.

Until 100K miles I was in TN and the engine block was sparkingly
clean.It looked like new.

At around 120K,I saw that the engine rotatiion where incosistent and
finally discovered that the distributor is faulty.My menchanic cleaned
the distrbituor (had a pool of oil inside it, possible cause ,
leakeage from the engine into the distributor).Once cleaned the car
again was running great.

It now has 139K on it, it had gone thru two terrible snowy winter
season in the notheast (last year and year before last),since I moved
to the northeast.

But it still performs very well.

The only thing that is bothering me is that,now under the hood I see
oil leaking from the top of the engine and ,the whole thing is oil
covered,every hose,every thing around the engine.

I found that Nissan had an O ring recall on this vehicle.Is this leak
a possible O ring failure.If yes,am I still eligible,I am the FIRST
owner of the vehilce,bought it brand new.

Please advise.

Thaks in advance.

Mine was leaking oil at the top of the engine as well quite a bit so I
replaced the valve cover gaskets yes I said 2 and now it is not leaking