[VTRelite]

on the base saxos they use a gasket i think its only the VTR/S that use sealant

I think all you gotta do is drain the engine oil, undo all the bolts on teh sump, take it off, give the contact surfaces a good clean with wire brush and solvent, put new gasket on and put it back onto the car and do up all the bolts and then torque them up to 30NM

(may also need to remove the downpipe)