Operation: Dry Tank

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Picture of mwak48 achievements

+3 1. mwak commented 6 years ago

How many litters did they burn regarding their average consumption and how big is the fuel tank ? So we can have an approximation of the error margin. I'm sure it's not that big.
Picture of irishgek50 achievements

+5 2. irishgek commented 6 years ago

You could have 5 alarms and a constant ding go off and people will still drive their cars empty .....I'm fair sure this is the reason for such reserves , I know people who drive till its empty then "oh it just says that , I've got at least another 50 miles". Another thing is if you put a meter in that tells people "exactly" how many km's they have left there has to be some margin for error and the fact some people are thick and will always be tight arses and not keep it topped up.
Picture of ComentAtor48 achievements

+2 3. ComentAtor commented 6 years ago

it's hard to evaluate how much you have left because i can do 400km on an open road averaging 6l/100km and then nail it on the autobahn with 18l/100km if the measurement devices aren't 100% exact youll be left dry.. so it's better they leave a margin

and of course as #2 says there is always a percentage of idiots so ...
Picture of Judge-Jake53 achievements

+1 4. Judge-Jake commented 6 years ago

They are doing a similar experiment with Ozzy Osborne. :D
Picture of Thanny37 achievements

+2 5. Thanny commented 6 years ago

Isn't this kind of thing common knowledge? My car says 0 miles left right about the time the low fuel light comes on, and that comes on when there's about 3.5 gallons of gas left. Based on my typical mileage, that means I can go for another 75 miles (~120km) or more.

It's always been the case that low fuel warning lights (and now range estimates) are set to push people towards filling up earlier rather than later. And that's such common knowledge that no one does it. Everyone getting a new car figures out how far they can really go when the low fuel indicator comes on, and bases where they stop on that. And before low fuel lights were a thing, the same scenario played out based on when the needle reached the line on the gauge marked 'E'.
Picture of Abdullah5419 achievements

+2 6. Abdullah54 commented 6 years ago

There are two options - the computer takes into account the capacity of the fuel system (not likely) or it doesn't - probably the case in the video. So, provided this, size of the tank does not matter. The computer most probably shows zero when the fuel sensor touches its bottom position. There is however still some fuel in the fuel system, the very bottom of the fuel tank (below the sensor range), which provides some buffer. Some of the older cars fuel pumps used to overheat and die as they were cooled by the fuel, the garbage at the bottom of the tank can be sucked into the fuel system, etc.. So this is generally not good for the fuel system components.
Picture of Thanny37 achievements

0 7. Thanny commented 6 years ago

Fuel pumps overheating due to low fuel is pretty much an urban legend.

Electric fuel pumps in the tank (mechanical ones are next to the engine) don't overheat from low fuel. They generally come in two types - those that need to be surrounded by fuel to radiate heat, which reside in a bucket-shaped section at the bottom of the tank that is always full of fuel, and those which are mounted at the top of the tank, and therefore almost never submerged, relying only on the fuel flowing through them to take away the heat.

Running the tank very low can run the risk of washing sediment from the bottom into the fuel system, but that's not nearly the problem it was with metal tanks (from rust).

There's no good reason to fill up more frequently. Some suggest never letting the tank get below 1/4th capacity, but that's hogwash.
Picture of ComentAtor48 achievements

0 8. ComentAtor commented 6 years ago

I ll have to dissasemble my car this weekend
Picture of thundersnow58 achievements

0 9. thundersnow commented 6 years ago

I'm not gonna test it...my tank is 3/4 empty, time to fill her up again, yup! O:)