A way to see how many miles per gallon (MPG) your Nissan car burns is to fill up your gas tank and record the mileage from your odometer. Drive your car in the way that you usually do until you have gone through at least a half a tank. Fill up your gas tank again and if you have, driven 100 miles (or whatever) then divide that by the exact number of gallons your car took to fill it up the second time. Your miles per gallon will vary each time you do this because of the type of driving you did, like: stop and go city driving or freeway driving, etc.
Keep Nissan gas tank full so condensation will not form or water will settle in bottom of gas tank and rust and weaken. Your fuel gauge tends to read the fuel level in your gas tank, regardless of the shape of your tank
The fuel monitor inside your gas tank does not go all the way to empty. Its range is full to about 1/8th. So, full is full, and empty is really 1/8th. It is designed that way so you won't run out of fuel. Fill back up when you get down to a 1/4 tank because the bottom of your tank has trash and other elements that can hurt your engine and clog your fuel filter.
Keeping fuel in your Nissan gas tank will help keep the electric fuel pump cool as heat will harm electronic components. The bottom of the pump has a sock or a filter on it to prevent the pump from sucking up rust or other particles. The fuel is further filtered in most vehicles with an inline filter. A gas tank that has a build up of "garbage" is a lack of power after running for a period at higher mileage. The sock becomes clogged and starves the engine of fuel. Usually when a tank has debris of rust and such, the car is usually in rough shape.
The lower the fuel level is the more room water has to evaporate out of the gasoline. This causes rust in the fuel tank and when you do run out of fuel, you are running on all the nasty stuff that's collected at the bottom of the fuel tank. Your car may originally hold 14 gallons for example. Then later it only holds 11 because of all the sediment and rust that has formed over time. Do not let your engine running on that entire gunk. Prevent this by keeping your Nissan gas tank as full as possible.
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About the author:
Jenny McLane is a 36 year old native of Iowa and has a knack for research on cars and anything and everything about it. She works full time as a Market Analyst for one of the leading car parts suppliers in the country today.