Vehicle shown in this step: 2006 Ford F-150 XLT 5.4L V8 Extended Cab Pickup (4 Door)
Source note on shared footage
We have a massive and growing video library, but we don't have everything...yet.
Car companies often use the same engines in different cars. They also slightly alter the styling and sell the same car by two different names (amongst other tricks to help offset development costs).
Our system selects the most applicable video for your car based, in part, on these characteristics. The video displayed may not look exactly like your car, but may be relevant enough for you to get a good idea how to do it.
查看中文对照 · Chinese translation
我们有一个庞大且不断增长的视频资料库，但还没有全部内容……
汽车制造商经常在不同车型中使用相同的发动机。 它们还略微调整了外观设计，并以两个不同的名称销售同一款车（以及其他一些技巧，以帮助抵消开发成本）。
我们的系统会根据这些特性，部分地选择最适合您车辆的视频。 视频中显示的内容可能与您的车辆外观不完全相同，但可能足够相关，让您了解如何操作。
Procedure notes
The engine air filter in your 1991 Ford E-150 Econoline cleans the air that enters your engine. You should change the filter on your E-150 Econoline at least once a year or every 20,000 miles, whichever comes first. If you drive in dusty or sandy conditions, you should change your filter more frequently. A dirty air filter will cause your E-150 Econoline to lose 1 - 3 mpg, depending on your driving, you can save 70 - 100 gallons of gas per year simply by changing your filter regularly. The video above, shows you where the engine air filter is located in your E-150 Econoline and how to change it!In addition to improving the fuel economy of your E-150 Econoline, regularly replacing your air filter will put less strain on your engine. These filters are fairly inexpensive, so check out our parts page for great deals and coupons on a new one (tip: buy several, when you go to check the filter on your E-150 Econoline, you can easily swap it for a new one if it is dirty). Be sure to adhere to a recurring schedule for your 1991 Ford E-150 Econoline replacement.
查看中文对照 · Chinese translation
你的 1991 福特 E-150 Econoline 的发动机空气滤清器会过滤进入发动机的空气。 你应该每年或每 20,000 英里更换一次 E-150 Econoline 的滤芯，以先到者为准。 如果在尘土或沙地条件下驾驶，应更频繁地更换你的滤清器。 一个脏的空气滤清器会使你的 E-150 Econoline 每加仑油耗增加 1 - 3 英里，具体取决于你的驾驶习惯，只要你定期更换滤清器，每年就能节省 70 - 100 加仑的汽油。 上面的视频展示了您的 E-150 Econoline 中发动机空气滤清器的位置以及如何更换它！除了能提升您 E-150 Econoline 的燃油经济性外，定期更换空气滤清器还能减轻发动机的负担。 这些滤芯价格相当便宜，建议查看我们的配件页面，获取全新滤芯的优惠促销和优惠券（提示：购买多个，当您检查E-150 Econoline上的滤芯时，如果发现脏了，可以轻松更换为新的） 请务必按照定期计划为您的 1991 福特 E-150 Econoline 进行更换。