well you dont have to. but after my 59 gets restored I will change all filters at every oil change. because after spending that much money on a car to get it back like new. and not keep it clean inside and out  should be a crime.
DR CHALLENGER <drchallenger@xxxxxxxxxxx> wrote:
so i need to change an air filter every 3000 miles?
>From: henry ford 
> >things you should do at every oil change.
>change both oil and filter.
>change air , fuel and breather filters.
>change pcv valve.
>check spark plugs for proper gap. and the ignition points.
>have the coolant system checked and flushed as needed.
>inspect all hoses and fuel lines as well as vacuum lines and fittings .
>
>
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