Technical Fiat Stilo 1.9 JTD Diesel which oil is required ?

[roratone]

Hi everyone this is my first post to the forums so apologies if this question has been asked many times before.

I recently purchased a Fiat Stilo 1.9 JTD diesel which I think is excellent it's my first ever fiat car in 15 years of motoring and I've been so impressed with it. I have a question regarding the oil it requires though, the owners handbook says the car requires 10w/40 fully synthetic oil or 5w/40 semisynthetic. Now I've never owned a diesel let alone a car that requires fully synthetic oil so hope someone can help.
I went to halfords yesterday to pick up some 10w/40 fully synthetic but they don't stock any brand in that grade they do a 10w/40 part synthetic or a 5w/40 fully synthetic. I wondered if anybody could give me advice where I can buy 10w/40 fully synthetic (without being charged the earth) or tell me if i can put the halfords 5w/40 fully synthetic in or mix with the 10w/40 part synthetic ? The car was serviced just before purchase and I believe they said they put in full synthetic but not sure what grade.
Any help on this would be very useful
Many thanks in advance

 

[beau]

welcome.

to be quite honest with you, for the cost of the oil (£30 or so) just empty it out and start over so you know what is in there.

i would use this-

http://www.opieoils.co.uk/p-997-fuc...timate-performance-full-synthetic-diesel.aspx

 

[roratone]

Hi Beau,
Thank you very much for the quick helpful reply and the very useful link.

All the best

 

[john55]

Keep to synthetic oil as changing to a semi synthetic can cause oil seals to leak. That is general advice, not Stilo specific. Go to a motor factors shop and you will get the correct oil much cheaper than Halfrauds.

 

[Argonought]

Don't even think of skimping on oil quality for a JTD - they barely use any so use the best.

Go for nothing cheaper than a 5W/40 fully synthetic. The 5W (or 0W) part stops any start-up clatter even on the coldest mornings

You can see what I'm using from my sig and that's about as expensive as oils get