After 30,000 miles, my air filter is not dirty; Why?
1994 940 volvo; non turbo
Clean air filter
Jul 08, 2003
2 Replies
1994 940 volvo; non turbo
Probably because you don't drive around in cities where the air is full of smoke and dust.
If air is always being drawn from the pre-heat hose it would be cleaner than if it were drawn from the front of the car. There's a flap in the air intake system that switches to outside air after the car warms up; check that.
Brick_0
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