My friend's 4efte car got flooded during typhoon and the water reached the ceiling of the car. Since the car was flooded, water penetrated the inside the engine bay. after the flood was gone, the car was towed to a garage, After doing the all of sort basic thing to dry up the car, the mechanic flush out everything inside the car and replace it with diesel oil. Then after a while started the engine. it took a while for the engine to run, then another flush out and replaced again with a diesel engine. then the car runs. Questions : Is that ok using diesel engine oil inside the 4efte? what