Chevrolet: Chevy Lumina 1995 3.1, chevy lumina, lumina

Question
I just purchased a 1995 chevy lumina.  I just wanted to know which engine has the most problems 3.1, 3.4 or the 3.6?

Answer
Nefrtiti;
     I do not understand- as all are good,the larger the more fuel it will burn, as far as problums there are no call backs that I know about, as long as you change the oil and filter at apx. every 3 to 4 thousand miles , and add a can of STP to the oil than you should be just fine with any one of them.also have it serviced when needed you should have no trouble at all and get a lot of miles out of it as long as you take care of it.  ok and if the red service light ever comes on-do not wait have it looked at A.S.A.P.  ....>>>><>