Greetings. Have a change of oil on my Smart ForTwo Coupe CDI, 72000KM, year 2001, 60 HP. Up to now, Mobil 1 0W40 has always been used. I had a 5l canister from France purchased cheaply, but Mobil 1 5W40, also for Turbo Diesel. Can you compare the two oils with each other, which is better, which is worse for the flicker. Drive about 350 KM a week, of which little short distances. I would be very grateful for some good advice.