Steering damper. If you are going to explore potholes frequently, you may need a different type of vehicle, i.e. HUM VEE or M1A1 Abrams. Both are up to the task.

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Jeff Lawrence
1989 300e
2000 Dodge Grand Caravan SE
No matter what you fix, there will always be something else to fix..
"Warranty" is just another way of postponing the inevitable.