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When a car runs, it produces heat as a wasted product. This heat is then used to heat up air and blow it at you. This heat will be created even when the heater is off, so using the heater should not lower gas mileage.
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∙ 15y ago
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Would a bad thermostat cause a decrease in gas mileage?
A bad thermostat can cause a decrease in gas mileage. If the thermostat is stuck open, the engine will tend to run cold. Not only will this result in a perpetually low temperature gauge reading and poorly performing heater. It will also cause the ECU to richen the mixture, since the engine will appear to be warming up to the ECU. This will result in poor gas mileage. Replacing the thermostat will allow the engine to fully warm up, which will restore gas mileage as well as heater performance.
How much could aggressive driving lower your gas mileage?
It can decrease your mileage by 75%.
Can you use 10w40 in your Honda Civic?
yes, but will decrease fuel mileage a little, may not be noticeable, and will help with noise and leaks too...
Will using a smaller tire size than stock increase gas mileage?
No, it will decrease gas mileage.
How much do car roof racks decrease gas mileage?
Roof racks themselves have a negligible effect on gas mileage.
Does engaging your 4 wheel drive decrease gas mileage?
Yes
Does a positraction improve gas mileage?
Posi?ætraction does not improve gas mileage nor does it decrease gas mileage. The traction does not come into play in less the pavement is wet.
Would removing the AC unit off a 1998 Chevy Malibu give better performance and increase gas mileage Also can you do that?
No it will not give you better performance or increase gas mileage. Gas mileage and performance will decrease only if you use it. leaving it off is like not having it at all.
How much gas does a pickup truck use on a farm?
To do what? If driving about the same as the posted city mileage. If hauling it would decrease based on the weight of what you're pulling.
How do you know when my car needs a tune up?
When performance and fuel mileage decrease.
Can non GM made spark plugs decrease gas mileage in a 2000 Chevy Silverado?
Not necessarily. The wrong heat range plug can decrease mileage. As the AC/Delco is a excellent plug, I would just install the OEM GM plug. I would also use OEM filters as the AC/Delco oil filter is top rated.
What can you do for better gas mileage?
Don't use air conditioner or heater, roll windows down, and don't put stuff on top of the car (like a car top carrier).
