When to replace the air filter in 2000 Carmy?

When to replace the air filter in 2000 Carmy? I checked my
record, it was never replaced. And my car has 50,000 miles now.

Don wrote:[color=blue]
> When to replace the air filter in 2000 Carmy? I checked my
> record, it was never replaced. And my car has 50,000 miles now.[/color]
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Replace as needed.
Buy a new Toyota air filter.
Remove the old air filter, hold it up to the light and see how much
restriction you observe.
The manual recommends blowing in the reverse direction with compressed
air, but when the light shows dark areas, just change the filter.
Be sure the sealing surfaces are clean, and the filter is seated fully.

Air filters aren't that expensive.

I just as a routine, replace the air and cabin filters on both rigs
yearly (about 12-13k miles) and usually they are fairly dirty.
(Avalon and Highlander)