1995 E420 with 60,500 miles. Have done all 60K service except replace oxygen sensor, which is called for on maintenance schedule. Having no problems but wanted opinion as to go ahead and repalce. I do a lot of my own maintenance and is this something I could handle? Anything weird to look out for?

Thanks

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95 E420 ( 76K) SOLD
85 380SE(125k)
95 SL500(72k)