My brother borrowed my car. We had recently bought a new car, so my 2003 Chevy Cavalier was sitting around not being used. His car broke so he asked to borrow mine. (he knew that it had been sitting for at least 3 months). I lent him the car, for two weeks he drove the car, w/out any issues. I then used the car to run an errand and noticed a bad noise coming from the engine. Seems as if the car had no oil in and and the engine was blown. Who should pay the damages for a new engine. Me or my brother??