Originally Posted by mpolli

Seems like the AMM is a regular maintenance item, but one that causes people a lot of puzzling sometimes before they finally just change it out. So I am wondering if people could respond with how long their AMM lasted before it died, in miles and years. I am also curious if the life span is more closely related to years or miles. Here is the data I have so far:

1998 C230 101,000 miles, 6 years
1998 C230 61,000 miles, 3 years
1997 C230 83,000 miles, 5 years