For most vehicle owners, oil changes are treated as a routine maintenance task, whether they’re done at home or at an oil change shop. But according to an auto ...
A mechanic cracked open a neglected engine and what he found was brutal.
Engine oil color reveals its age, contamination level, and operating condition. Fresh oil is amber or light brown. Oil darkened to black but still translucent after a few thousand miles is normal.
Every few thousand miles, we pull into a shop, wait our turn, and let a technician drain and replace the golden liquid that keeps our cars running. Jet engines, however, operate on a completely ...