Hello folks, I had Castrol 5w-40 from the previous owner (in Germany), but today during a kind of delayed service they filled in 5w-30... They explained it is normal because of different temperatures :lol: Will I survive or I should not trust them anymore? I got good references about them, but it's a general "free" garage. Thanks for any answer, 'cause it's my first Ford and first Diesel, so I feel freshman again :) And yes, I watched for the correct level - here they tend to make it fast and over, too.