I do not want to say you too stupid....

One of my friends had Subaru and did not change oil regularly. One early winter morning, he ramped his car to highway in 1 minute without warming up the car. After he drove on highway for about several hundreds yards, the engine sieged and burned into blue smoke suddenly. The reason was that the oil was too old, dirty and thick, and lost lubrication. The seals and bearing of cylinders in engine were burned, and the burned bearing and seals stuck the engine. He finally towed the car back and opened the engine, so I had a chance to take a look at the inside of a burned engine.