Synpower Fully-Synthetic 5W40 Engine Oil is recommended for a citren zx. Valvoline, Triple Qx, Shell, Mobil, and Petronas are all companies that offer quality 5w40 product.
It depends the motor.
it is origanal oil
30 weight
5w30
you should but a couple corts of royal purple motor oil
motor oil
Assuming you are speaking of engine / motor oil should specify on the oil filler cap, should be 5W 30
Any kind of name brand 10w-30 oil should work just fine.
Mobil 1 synthetic.
Full Synthetic 5w-30
should be like 80 or 90 weight gear oil
just open the bolt on the sump and oil should drain