Normally a car's engine should run like ... a well-oiled machine. But if a car-owner neglects to change the oil on time, it can damage the engine beyond repair; and a new engine can be costly. By the time the oil pressure warning light glows red out on the road somewhere, it's generally too late.
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Drivers therefore have to remember to change their oil regularly. Many have the shop do it - but in fact it's easy enough for anyone to take care of at home. Master mechanic Alexandra Feders walks us through the process and explains what to watch out for.