When an oil change leads to a ruined engine

"My wife had the oil changed in her 2010 Camry at Walmart. A week later, she noticed a noise coming from the engine while she parked the car. When she restarted the car, the sound was much worse. She had it towed to the dealer, who said the oil-filter cartridge was installed incorrectly, so the oil ran out and the car’s engine is probably a total loss. How do I ensure that Walmart will make good on this?" ...

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When an oil change leads to a ruined engine | Tom and Ray Magliozzi - Car Talk - Business News for Dallas, Texas - The Dallas Morning News