I would stay on the factory suggestion.
Selenia 20K.

I've been using them years now (not only on my Stilo) and NEVER let me down!

Fiat Uno 1000 Fire (Older Mom's): ~200000Km (sold)
Fiat Tipo 1.4 ie (Dad's): ~370000 Km (still running)
Fiat Stilo 1.6 16v (mine :P ): ~137000 Km and counting
and a Fiat Idea 1.4 16v (Mom's) don't know exact milage.

Never had oil related problems with any of theese!

Selenia home site recomends Selenia K for the 1.8 which is a 5w 40 fully synthetic oil this oil is recomended by fiat for their cars and alfa as well..it can be expensive to use but ebay usually do some deals on it..a good alternative is mobil oil in the same spec which I now use and many of the alfa lads use as well..always payes to check the hand book cos in there it will give you the correct spec of oil to use..I joined this site a few years ago and have had some good buy's with them..

engine oil, motor oil, gear oil, car oil, motorbike oil, transmission fluid from oilman at Opie Oils

Selenia home site is..

http://www.flitalia.it/en/fl/content/view/162/258/

Originally Posted by goldwing

Thanks guys got it done at k/fit for £29.99 inc filter.

What oil did they use..did it say on your receipt..?

Originally Posted by goldwing

hi it was mobil super 3000 5w/40 fully synthetic mark

Mobil oils are very good and TBH quite surprised to see Quickfit use such a very good oil like that I half expected a cheapo mineral oil from them..the price you paid for the oil and filter change was something of a bargain..excellent..