My car showed an engine fault at 3000 kilometers, asking to check the emission system. Should I use 92 or 95 octane fuel for this car? Can someone with expertise help out?

I'm asking for advice from the experts here. I have a 2016 Ford F150 XLT that's run 40,000 kilometers. I've always used 95 octane fuel. Is it okay to switch to 92 octane? Thanks!

Do I need to fill the P1 with 92 or 95 octane fuel?

Does the 2011 MDX use 92 or 95 octane fuel?

Switching from 92 to 95 octane gasoline for your 2018 Jeep Renegade 4WD model might be beneficial for the engine.

Can using 95-octane fuel provide a power boost for a vehicle like the Kia Sportage that specifies 93-octane (now equivalent to 92-octane)?

I want to ask the car enthusiasts here, does the 2021 GAC GS5 often show the "check emission system" warning? Mine does this frequently.

Should I use 92 or 95 octane gasoline for the Volkswagen Touran 2.0 naturally aspirated engine?

In 2022, the car required 95 octane fuel, but for the 2024 model, it uses 92 octane fuel. I checked and it seems like nothing has changed. Why is that?

I've been using 95 octane fuel for two and a half years. Should I continue with 95 or switch to 92? Thanks.

The new Jetta VS7 now specifies the use of 92-octane gasoline, while the 2021 version specified 95-octane. I've always used 95-octane gasoline. Has the new engine been technically improved compared to the old one?