So the "Magnatec" I used is Fully Synthetic and shows the exact Fiat specification in my handbook. They actually promote a "Stop Start" version for my car but what the heck, they are most likely the same and only noticed it in Tesco the other week on a crazy offer.
I have found many many older threads saying that Magnatec is not fully synthetic. They have been using that brand for years over many variations of oil.
I change the oil and filter every 5000 miles, it is only 3 litres, and Asda and Tesco have some very low pricing on the Castrol oils right now. I normally use the Tripple QX from Eurocarparts (in the Ducato too). I doubt they have any problems with it in the very many vans they run!
I have found many many older threads saying that Magnatec is not fully synthetic. They have been using that brand for years over many variations of oil.
I change the oil and filter every 5000 miles, it is only 3 litres, and Asda and Tesco have some very low pricing on the Castrol oils right now. I normally use the Tripple QX from Eurocarparts (in the Ducato too). I doubt they have any problems with it in the very many vans they run!