Yes it would. Citroen recommend Total Quartz 7000 which is semi, and 9000 which is fully synth. If I were leaving the oil for it's full stretch, I would certainly use the full synth. The sump plug on the 2 litre can be found at the back of the sump. On the 1.6, it'sa on the bottom of the sump. It's easy to find and remove --------------- once you've got the undertray removed. That takes some time. Also to give yourself sufficient room, you'll need the car on ramps.