This is why it is so important to get regular oil changes. At 125,000 miles on this engine the sludge build up is huge. The engine only had 3-5 oil changes total, throughout its life. Now, because of not getting regular oil changes this car needs a new engine.
Cost of new engine =$4000-$6000
Cost of regular oil changes @ 4 oil changes per year= $200 for the year
Getting your car in for regular oil changes is much less than a new engine, wouldn't ya say!