Blair's Ferry Automotive: Why Replace Your Engine Air Filter?
March 1, 2020
Just as our bodies need clean air to function properly, your vehicle engine needs clean air to operate efficiently. Let's go egghead for a minute. For every gallon of gas we burn driving on Marion streets, 20 pounds of carbon dioxide comes out the tailpipe. Question: how can a gallon of gas that weighs a little over six pounds produce 20 pounds of carbon dioxide?
The answer is that the carbon comes from the gasoline, but the oxygen comes from the air. You see, it takes about 12,000 gallons of air to burn a gallon of gas in your engine. Clearly, your vehicle needs a lot of air to keep going in Marion. A lot of clean air is best.![]()
You've seen the pictures of people in Japan wearing face masks. They want some kind of filter to keep unwanted pollution and germs out of their lungs. Well, your vehicle also works better when its internals are clean. When your vehicle air filter is dirty, it simply can't trap any more dirt, so the pollutants just pass through into your air intake system. From there it can clog your fuel injectors and even get into the motor itself. Not surprisingly, burning dust and pollen in your vehicle engine does you no good.
Replacing a dirty air filter at Blair's Ferry Automotive in Marion can improve your fuel economy by up to 10 percent. At today's Marion fuel prices, you should be able to pay for a new air filter before your next oil change.
The verdict: When your vehicle engine air filter needs to be replaced; it needs to be replaced. How often depends entirely on the level of air pollution where you drive in Iowa. A simple visual inspection at Blair's Ferry Automotive in Marion will tell you when you need a new engine air filter.
Blair's Ferry Automotive
1565 Blairs Ferry Rd.
Marion, Iowa 52302
319-447-6310
http://www.blairsferryautomotive.com
Need Service?
More articles from Blairs Ferry Automotive

Breathe Easier (Cabin Air Filter)
December 21, 2025
When you get in your vehicle, how does it smell? If it's not so nice, it may be time to have your cabin air filter changed. It's not the same one that filters out the air used in the engine. The cabin air filter screens out dust and other particulates from the outside air so when it enters the c... More

Smooth Operator (Shocks and Struts)
December 14, 2025
Few of us ever drive somewhere without encountering some pretty rough roads, and it's amazing how well our vehicles are able to smooth out the ride. Thank your shocks and struts. The two parts are similar. Some cars have shocks in the rear, and struts in the front. Others have struts all around... More

Let?s Shift Gears (Transmission Fluid Replacement)
December 7, 2025
If you have a vehicle with an automatic transmission, you probably never think about gear shifting. When motor vehicles were invented, all of them had to be shifted manually. But that wonderful self-shifting transmission, referred to these days as simply an automatic, changed everything. Automa... More
