Engine oil Mobil or OEM Toyota

I suggest you to use 5W40. I have a Toyota Auris and i change them every 7.500km without filter change and at 15.000 km with filter change. In my city at summer the temperature is about 40°C on summer and I have 257.000 km. I haven't any problems till now. My engine running smooth and never burned oil.

I've personally run Mobile 1 full synthetic for 10k intervals ever since the factory oil changes ran out without issues.

Not saying it is better than anything else, but on my G60 turbo i used Mobile1 FS-X 5w-50 and will continue with this oil on my PG/ABA turbo.

I use Mobil 1 for engine oil, and Honda stuff for transmission fluid.

I use 0-40 Mobil one and have 235k miles now. Never have had an issue. I switch between the European blend and high mileage. Never has made a difference.

I use Mobil 1 high mileage 10w40 in North East Ohio Year round. No complaints

I’ve been doing annual oil changes with the mobil1 15/20k oil and 15/20k filter. Oil comes out clean every year, no problems.

I've put Mobil 1 in everything I've owned for the past 30 years and change it at 10,000, but I'd never push it to 20,000.

Mobil 1 esp 5w30

$33 for a jug at AutoZone.

I was using Mobil 1 fully synth 5w40 on my old cab with no problem at all. good pressure at idle and at 2k. I used this oil in my new cab (same engine) and boom! No oil pressure at for the first 15 secs. Then it immediately jumped to 5 bars and finally settled down to 1 bat maybe less. However, I saw a dramatic increase in oil pressure even with the 5W40 mobil 1 when I switched to a 2L oil pump. Idle pressure was arround 2bars. Although I used it last summer and it worked just fine throught my vacations in Greece.