Does removing air filter increase power?

Yes, removing your air cleaner will marginally increase horsepower. However, the increase would not be enough to make a noticeable difference, or to improve lap time around a track. The difference would only be detectable using a dynamometer.

Does WD 40 increase mpg?

WD-40 will not improve gas mileage.
2. 24 Feb 2022.

Does toothpaste in gas tank save gas?

There are no benefits to putting toothpaste in your gas tank.
2. Fuel saving is not a benefit of putting toothpaste in your gas tank.
3. It is safe to conclude that there are no benefits to putting toothpaste in your gas tank.

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Do Iridium spark plugs improve gas mileage?

Switching to iridium spark plugs can improve the fuel economy of your gasoline vehicle.
2. This change comes from the fact that you now have a better ignition profile, which can help to ensure the efficient burning of fuel.
3. Making this switch can help you to save money on gas, and may also help your car to run more smoothly.

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What speed gets best mpg?

The Energy Saving Trust says that driving at speeds between 55 and 65 mph is the most efficient way to use fuel and get the best fuel economy. However, driving any faster than that decreases fuel efficiency rapidly. For example, driving at 85 mph uses 40% more fuel than driving at 70 mph (which is also illegal).