A question: I know road conditions and everything make a difference but how long should an alignment hold on 96 w210 and is it a normal symptom of older front end suspension, bad lucking hitting potholes or worse? I know who did it is also a factor

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My Daily : 96 E-300 Diesel with 195,000 miles
Retired: 92 300D 2.5 T 345K miles and for sale
Retired: 95 E320 157K miles and currently parked with blown engine

Both retired cars are for sale as is my w124 shop inventory