A few years ago, I bought a used a F-150 with a large turbocharged diesel engine on it and the turbo went out, so I got a mechanic to replace it.
Now, the turbo went out again and when the mechanic replaced it, they took it out for a test drive. When they took it out to test it, the engine ran away and got completely melted. There was oil in the intake from either the old or the new turbocharger and caused a diesel runaway.
They are asking 12,000 to fix it. Are they liable to the damages they did to my truck, or do I have to pay for it?