I do not work at Lexus at all, I am simply a Lexus owner and enthusiast like everyone else and I was attempting to make you feel better. Sorry I bothered I guess.
My point was you did not loose 3 quarts while the engine was running. You lost three quarts at some point, a lot of that is on your garage floor, a lot of it is on the towtruck, and a lot of it is on the floor of the Lexus dealer. You were smart and did not continue to drive the vehicle which probably saved you from lasting engine damage IMHO.
Not the check engine light...the oil pressure light. No low oil pressure=no low oil pressure light.
This I agree with in part, however the only way to get rid of the smell is time, it has to burn off the exhaust components. Not a lot they could have done.
Now if its knocking and still leaking you need to take it back.
The warranty covers the work, but also the components which the work was done to. Should you have an issue later you have some leverage because the car was addressed within the warranty. Anyways its a moot point because the components you've had an issue with are covered under the powertrain warranty and that is still if effect.
Do an experiment. take a little bit of motor oil and try and light it on fire. Motor oil is designed to operate at very high temperatures, your engine block is 250 degrees or so. It doesn't catch on fire very easily...its not like cooking oil...
Again, I'm trying to help stop trying to pin me with an agenda