hi i have just bought a fiat punto sx on 78k and its great but i want to service her but dont no where i can get parts apart from the dealers.

whats the best type of oil
how much does it take to fill
how much are spark plugs and leads and where from
when does the cam belt need changing

I find shop4parts the best for genuine/good quality parts

The best type of oil IMO is selena 20k, not sure on the ammount but if you get a 5 litre tub you can fill it, then use the rest for top-ups throughout the year, and maybe use it next oil change

have a look on link above for sparks, oil, leads. . etc.. pretty much everything

The cam belt depends on what engine you got in it (1.2 8v? or 1.2 16v?)

its a 8v thanks john

You can get those parts from your local Halfords, it's all laid out and easy to pick the right stuff.

I use 10w 40 in my 8v, some say Selenia or whatever it is, is the best, but tbh 10w 40 part synthetic will be fine.

Check through your history, if your cambelt hasn't been done yet, I'd get it done asap.