My mother was driving our 87' 300SDL on the freeway in 2001 when it experienced a sudden loss of power and so she put the pedal down in an attempt to maintain speed so that the car behind her didn't plow into the car. At that point (according to her) the trap oxidiser IMPLODED and sent a gigantic cloud of carbon out the exhaust pipe. She was able to get the car off the road and called a tow truck and had it sent to the dealer into have the recall work performed. We weren't notified of the recall at that point! I was unaware that the trap oxidizer was capable of exploding like that but fortunately the trap was removed and the turbo was not shredded to my knowledge
We did get one of those letters stating lifetime warranty on the exhaust system after the dealer replaced the trap.