Do you use fully synthetic oil or semi-synthetic oil for your 308?

Hey car enthusiasts, what brand of engine oil are you using for your Volvo C30? Which brand do you think is better?

Hey fellow car enthusiasts, what oil do you all use for your V40? Which brand is better?

What engine oil is recommended for the Jinxuan 4B11? I've been using the original 5W30 mineral oil from the 4S shop for over 5 years (people say it's like gutter oil [lol]). I want to switch directly to fully synthetic oil. Any recommendations? Some say you should transition with semi-synthetic oil before switching from mineral to fully synthetic. Is this necessary for the Jinxuan?

Which synthetic engine oil do you use for the 2020 Tharu 1.4T model?

Where do you all get your cars serviced, and what kind of engine oil do you use?

Do you use fully synthetic oil or semi-synthetic oil for your 308?

Which is better for fully synthetic motor oil, Castrol or Mobil?

What should I pay attention to for the second maintenance of the VS7? Any tips from experienced drivers? Do I need to use fully synthetic oil? Currently, it has run 9,200 kilometers.

Do you use fully synthetic or semi-synthetic oil for your 10,000 km oil change?

How long should I wait for the next maintenance after adding semi-synthetic oil?