The engine warning light is on, indicating an oil leak. I changed the oil 4 days ago using 5-30w. What's going on? Does anyone know?

The oil warning light comes on when I brake hard. Sometimes the oil light just turns on!

I bought a second-hand 2014 Kia Sportage, and the exhaust smells really bad. I hadn't driven it on the highway before, but a few days ago I did, and the engine warning light came on. The check indicated an issue with the oxygen sensor. After replacing it, the error code was cleared, but a few days later it came on again. It seems fine when not driving on the highway, but as soon as I do, the light comes on and stays on. Can any experts advise on how to fix this issue?

Does anyone know what this warning light means? It's urgent.

I just got a 2011 Mazda 5 a couple of days ago. After only two days, the check engine light came on with the code P2177. Can anyone help explain this?

Hey folks, got a low oil warning and the next day it started making noise. Even after adding 4 liters of oil, it's still the same. Any idea why?

What's going on with the 2014 Peugeot 308 dashboard warning light?

Is it troublesome to replace the shock absorbers on a Mazda 6? I noticed during maintenance a few days ago that both the front and rear shock absorbers are starting to leak oil.

Why is it indicating that I need to change the oil again when I just changed it in March?

I drove for about an hour at night, and the battery warning light came on. Then I stopped driving. The next day, when I drove again, the warning light was off. Can you tell me what's going on and if it's serious? Thanks.

The engine warning light is on, indicating an oil leak. I changed the oil 4 days ago using 5-30w. What's going on? Does anyone know?