206+ petrol spark plug replacement help

My friends vehicle 206+ gasoline 2011 model 37 500 I will replace the spark plugs, how do I know if the original spark plug is and if I get a Bosh spark plug, does it hurt? I bought a price from Erzurum filters plus spark plugs plus Total oil change will be around 200TL.
Is it suitable for oil 5w40 here - it drops to 30s. mirror 2014-09-18 07:51:42

In my knowledge of the spark plug, you can even put 0w40 in my opinion -30 not to be causeless or live.

We freeze in winter, the wolf goes down to the district: D