Anonymous
Post 03/28/2017 07:36     Subject: Let car gas tank go to empty occassionally?
Absolutely terrible idea. If you look in your car's manual, it will probably state that you should never let the tank go empty. It is very damaging to the fuel pump.
Anonymous
Post 03/28/2017 06:19     Subject: Re:Let car gas tank go to empty occassionally?
Are people talking about really running it dry or merely waiting until the light goes one or it gets to the last bar?
Anonymous
Post 03/28/2017 02:45     Subject: Re:Let car gas tank go to empty occassionally?
You run the risk of damaging the fuel sender unit every time you run it dry. Costs big bucks to drop the fuel tank and repair.
Anonymous
Post 03/27/2017 09:25     Subject: Let car gas tank go to empty occassionally?
Anonymous wrote:
Scientist here. It makes no difference whatsoever, OP.

I only fill up when my gas light turns on, because I don't wish to drive to the gas station more than it can be helped. I can go 20 miles when it lights up (30 on the highway).


This is why we engineers don't believe scientists. LOL.
Anonymous
Post 03/27/2017 09:23     Subject: Let car gas tank go to empty occassionally?

Scientist here. It makes no difference whatsoever, OP.

I only fill up when my gas light turns on, because I don't wish to drive to the gas station more than it can be helped. I can go 20 miles when it lights up (30 on the highway).
Anonymous
Post 03/27/2017 09:22     Subject: Let car gas tank go to empty occassionally?
Anonymous wrote:I usually fill up at half a tank every week. Yesterday, someone told me to let it run empty to clean out the old gas completely. Is that correct?


You have an ill-informed someone. Very bad for your car. I always fill my tank between 1/2 and 1/4. At 1/4 you are picking up trash. In winter, I fill up at 1/2 tank.
mjsmith
Post 03/27/2017 09:22     Subject: Let car gas tank go to empty occassionally?
the fuel pump is submerged in the tank. the fuel in the tank helps cool the fuel pump.

I have a hybrid so i occasionally run down to 1/8 of a tank. knowing full well that pumps isn't running all time.

you won't kill your car or pump doing this, but no real reason to run it "dry" so to speak.

when you are driving around, your fuel in the tank sloshes around and mixes up plenty.

the down side to having alot of air in the tank. is that this give more space for condensation to work in the tank. Condensation means water. and well water does not burn....
Anonymous
Post 03/27/2017 09:16     Subject: Let car gas tank go to empty occassionally?
Anonymous wrote:LOL. While it is not necessary, it will not harm your car in any way. Lots of Chicken Littles in the thread.



PP must be the idiot who told OP it was a good idea

https://additech.com/2016/03/08/why-running-on-empty-is-bad-for-your-car/
Anonymous
Post 03/27/2017 09:14     Subject: Let car gas tank go to empty occassionally?
LOL. While it is not necessary, it will not harm your car in any way. Lots of Chicken Littles in the thread.
Anonymous
Post 03/27/2017 09:09     Subject: Let car gas tank go to empty occassionally?
Don't do this. Whoever told you this gave you terrible advice.
Anonymous
Post 03/27/2017 09:07     Subject: Re:Let car gas tank go to empty occassionally?
Huh? The gas mixes around.....
Anonymous
Post 03/27/2017 09:05     Subject: Let car gas tank go to empty occassionally?
You NEVER run it empty. Terrible idea.
Anonymous
Post 03/27/2017 09:04     Subject: Let car gas tank go to empty occassionally?
No. Don't do that.

Lawmowers, yes, when storing for MONTHS. Not cars.
Anonymous
Post 03/27/2017 09:03     Subject: Let car gas tank go to empty occassionally?
I've always heard this is a terrible idea. Not good for the car at all.
Anonymous
Post 03/27/2017 08:59     Subject: Let car gas tank go to empty occassionally?
I usually fill up at half a tank every week. Yesterday, someone told me to let it run empty to clean out the old gas completely. Is that correct?