I have an 2003 Ford SVT with about 140K on it. Recently it had been giving me problems with regard to the O2 sensor, I changed it a couple of times and changed the PCM, as my mechanic thought that it was causing the problem. After a set of trials, I went to another mechanic and he told me that I must have gone over a bump or drove on a gravel road or something, because the exhaust somehow was pinched upwards towards the Rear O2 sensor and it broke it. So, I changed it one more time, and he told me that he fixed the place where it goes in as well. My question is: is this a plausible explanation? and if yes why didn’t my other mechanic see it? He lifted the car up as well and looked under it but he could not catch it.
My other question is that I went for an oil change after I repaired the O2 sensor, and right after those guys lifted the car up they brought me in and showed me that the oil pan gasket is leaking oil and needs to be replaced. I don’t think that my car was leaking oil before, so is it possible that the other two mechanics had something to do with it? and WHY DIDN’T THEY SEE THE LEAK FROM THE OIL PAN GASKET? they all lifted the car up and were working around the same area! Also, I have to drive for about 4 hours next week. can I drive it?? how much oil leak is too bad? I don’t see anything on my garage floor, so I am assuming either that the oil is getting burned as it drips on the hot exhaust pipe, or that it is not leaking that much.
P.S: I included a video of where is the leak.
Thank you guys!