2004 partner

hello friends & nbsp; I bought a new partner. 2004 & nbsp; 2, 0 & nbsp; HD & nbsp; I have no information about Peugeot, whether the vehicle is maintained every 10 000 km. The oil of the transmission changes every few thousand km. What kind of oil is put into the engine and transmission.
Timing belt changes every few thousand km. Finally & nbsp; How to disassemble the steering wheel of the car, I tried to disassemble it, but I could not disassemble it and the horn does not work at the moment. Thank you if you can help, thanks ..

Transmission oil is important in more automatic transmission vehicles. Manuals are also important, but I think it is enough to change every 100 thousand.
You can use 5W-40 oil as motor oil.