Steve is correct, by the time my air bladders had sprung leaks the hydraulic portion of the strut was "long long gone".
most people dont replace the front struts until they "leak", when in fact they should have probably replaced them long before they "leaked air".
at 394,000 miles my second set of front struts need to be replaced because the hydraulic portion of the strut is "worn out".
I'm getting roughly 200K out of a set of fronts, which IMHO is well worth the expense in keeping this cars unique suspension system intact.
"your mileage my vary, not valid with any other offer, some restrictions apply, not valid in all areas, returns are subject to restocking fee"