I have a 2008 Kia Sorento with the 3.3L, about 11k miles. The other day, I took it to my local mechanic for an oil change. Drove it all over town during the course of the following couple days. Then, last night, as I am about 3/4 mile from home, my low oil pressure light goes on. At that point, I roll down my window to listen to the car and can hear a grinding type noise (valves sticking?) on acceleration. I limp the rest of the way home and turn off the engine. This morning, I call the mechanic and they send the service manager right over. No oil on the dipstick whatsoever. He adds oil to the engine and drives it down the street to the shop. They inspect, and tell me it is a bad o-ring on the cone filter that caused all the oil to leak out over the course of 2 days, and that it is possible that they had not tightened it sufficiently when the changed the oil. They said no other damage had been done, replaced the o-ring, changed the oil and filter and sent me on my way.
So my question is this…what is the possibility that other (long term) damage could have been done? Should I have the vehicle checked out by another mechanic, or even the Kia dealership? Should I not even inform the dealership, as they may use it as a way to deny future warranty claims? The vehicle is no longer making the grinding type noise, and seems to be fine. I may drive it lightly the next few days just to be sure.