95 Nissan Quest, 145k
<br/> It started with the oil light on and off. It was on when stop or slowing down and the light went off when accelerating over 25 or 30 mph. I did find there is an oil leaking somewhere. I planned to take it to garage for check up and the symptom disappeared. I used the car for short trip about two weeks and the symptom did not come back. I checked oil almost every day since then.
<br/> Recently when I took a trip on highway, the light came on after about 30 miles. I stopped and checked oil. The oil was all right. I started the car and light did not come on at the beginning. However, it came on (blinking) after 5 minutes of drive and I heard a clicking sound. I had it towed to a lcoal garage.
<br/> The mechanic found a severe leak and need to replace ?gasket? or something like that, about a couple hours of work. He said the noise properly was from the lifter. However, when he checked the oil pressure, the pressure continued to drop to about 8 lb. He said the bearing properly worn and I will need a new engine.
<br/> It properly not worth to replace the engine since it is 15-year old. But before I say good-bye to the car I just want to get a second opinion. Could it be something clog the oil pump screen? Would it be good to check that first? Is there anything I can do (within a reasonable cost) before declaring the death of the car? Thank you for your advices.