I think you have overfilled the engine with oil because you haven't drained it properly, this is not going to do the engine any good, lots more oil, means lots of pressure in the engine, I suggest you remove the sump plug, and drain the engine properly, then fill with the correct amount of oil -0.5 litres run the engine switch off and let it sit for 30 minutes on level ground, then check topup if needed. if you took 5 litres out you should not be put any more than that in, If the spec for your car is 9litres that is what should have come out.