RLENT
Veteran Expediter
Don't bet on it - it may be working just finethe air flow gauge on my gmc for the air filter never moves....and it does function, just not as it is suppose to...
Air filters can, and do, last up to 100K miles and more
FWIW, I got 123K miles out of the original air filter in my Sprinter - when I replaced it the restriction indicator on the filter housing was still showing no restriction, and it was functional (tested with vacuum)
I went ahead and replaced it more due to age (couple years old) than anything else.
At this point I have 80K miles on my current air filter.