NEON 97 Synchronic (Oil spark plugs)

I am new with a synchronous neon. All excellent until it gave me a fault and turned on the light of the board "Service Engine Soon" I verified yy I noticed that a spark plug was off ... I did the next day in the morning the spark plugs and I realized that: Ohmy: they were all submerged from oil in the thread but not in the electrode, at the exemption from which I had turned off the day before (1). My questions are:
1) Is it normal in these cars that the spark plugs are full of oil to the thread? (They are not lazy)
2) What spark plugs (brand) recommend me to work optimal?


Thanks in advance for help!