206 1.4 hdi .. 5w30 - 5w40 ??

Hello friends..
As we know, I am thinking about changing engine oil within 1 month of winter. I used the summer time 10w40 and the winter time 5w30. (These are the savings of the service. I just watched it pure pure) Since this time I do not want to love the service, I dream of obtaining oil and filters from related sites and changing them to an industry master who does not spend much. While researching the sets on related sites, some sets of oil have 5w40..some of them have 5w30 oil. Based on your experience, should I continue to 5w40 or as usual 5w30? Are there beauties that 5w40 oil provides compared to the other? Thank you to the interested friends.

Brother, there is a huge difference between them, 5w / 40 is a little more expensive than 5w / 30.

I prefer between 5/30 or 10/40 depending on the vehicle's mileage.