1.6 hdi oil selection, 5 / 40-5 / 30-0 / 40 which one?

I have been using my 2006 model 307 sw 1.6 HDI for 4 years. I have always used 5/40 oil so far, but when I select oil like on the mobile or castrol site, it is recommended to choose 0/40 or 5/30 or even 0/30 oil. Which oil should I choose?

Sir, if you have used 5w40 oil for 4 years, I can recommend you to continue, but it can be mobil 1 ow40 depending on your location and the mileage of your vehicle. Sercan Mungan 2015-11-17 21:24:24

150000km heavy winter conditions temperature down to _30 degrees. Half a meter of snow ..

5/40 is enough. Teacher

5w40 is good, you can even return to 10w40 island km high vehicle old services put 10w40 directly above 100 thousand for example

Thank you for your comments.

[QUOTE = GökhaN] 5w40 is good, you can even return to 10w40 island km high vehicle berthed services put 10w40 over 100 thousand for example [/ QUOTE]

Due to the wear of the engine over time (depending on usage), oil reduction is more in fine oils. 5w30 - 5w40 - 0w30 etc. For example, when you add 5w30 oil, 10000 km decreases 1 liter of oil, while 10w400 oil is added, 0.5 lt. It will decrease. these are rough numbers I say.