45
votes
Accepted
Do cars consume less gasoline when the tank is full?
No. If anything you'll get worse gas mileage with a full tank because you're carrying a heavier load (more fuel = more weight).
What you are most likely experiencing is the top half of the tank is ...
- 162k
30
votes
Accepted
How to (relatively safely) store a small amount (200 milliliters) of gasoline for up to a month?
You can use a camping fuel bottle. They are usually made of aluminum, they are made to hold flammable liquids including gasoline, and they do not leak. I have seen them as small as 500 ml, and you ...
- 8,518
27
votes
Should I really keep my gas tank at least half full?
I'd suggest there's credence for all of these
Your fuel pump overheating if it runs dry
Unbeknownst to most, the fuel in the tank cools the fuel pump in most vehicles. The pump sits in a ...
- 162k
26
votes
Wrong octane fuel
It's not a problem mixing them. Just start using 95 if that is what the engine calls for. You'll not create any issues doing so.
Modern day engines have sensors which can adjust for the fuel. If ...
- 162k
22
votes
Haven't driven a car since the start of the pandemic; can it be driven without special measures?
Cars are routinely left parked for three to six months or more without running, with no ill effects. I wouldn't hesitate to jump it and see if it'll start. As @BrianKnoblauch comments below, jumping a ...
- 3,665
19
votes
Accepted
Accidentally put regular gas in Infiniti G37
It isn't going to matter in the long run and shouldn't cause you any issues to run the car with the tank of fuel you put in if that's what you decide to do.
Cars don't have an octane sensor. What they ...
- 162k
14
votes
2020 explorer will not fill up
Are you sure the gas station was open? I recently had the same problem and found that the lights were fully on at the station, the digital readouts on the pumps were glowing, but the place was ...
- 2,200
14
votes
Do cars consume less gasoline when the tank is full?
The best way to determine the actual fuel consumption is to brim the tank, drive till nearly empty then brim the tank again.
Then you have an exact volume of fuel and a specific distance.
Repeat over ...
- 34.7k
12
votes
Do cars consume less gasoline when the tank is full?
IF - the tank was uniform in its dimensions - vertical sides, etc., and IF - the gauge sender worked exactly in a linear manner, and IF - the gauge responded in that same linear manner, and IF - the ...
- 428
11
votes
Wrong octane fuel
Presumably since you say "92 octane gas" you are not in Europe.
The whole topic is a mess, because there are different scales for measuring "octane". The most common scale world-wide is RON, but ...
- 2,974
11
votes
Can I dilute 2-stroke gas and run it in my riding mower to get rid of it?
As long as you dilute it there should be no issues. Mixing a gallon or so with 5 gallons takes a 50:1 fuel-to-oil ratio to about 250:1. In other words, the engine will never notice it.
- 12.1k
10
votes
Accepted
Does the mileage indicate the quality of the gas?
It is not likely the quality of the gasoline causing the change. The sensors are unable to evaluate the chemical makeup of the fuel. It could be a change in your driving habits, changes in temperature,...
- 9,005
9
votes
Accepted
Why does "i" stand for petrol?
The i is a leftover from the 1970s, when a few companies (BMW and Mercedes, notably) started replacing the carburetor on their petrol engines with fuel injection. The marketing department saw an ...
- 4,412
9
votes
9
votes
Accepted
Is it necessary to turn off the engine while refuelling?
Here is a link from the API (American Petroleum Institute) website.
http://www.api.org/oil-and-natural-gas/consumer-information/consumer-resources/staying-safe-pump
The article is called Staying safe ...
- 3,972
9
votes
Accidentally put regular gas in Infiniti G37
I had a G35. I believe there was language in the owner's manual that said regular gas would not hurt the engine but you would not get full performance.
- 231
8
votes
Haven't driven a car since the start of the pandemic; can it be driven without special measures?
If you have the ability and access to some tools, remove the battery and bring it to your local national auto parts chain ie: AutoZone, AdvanceAuto Parts, Oreillys etc. You may want to call first to ...
- 20.1k
8
votes
How to (relatively safely) store a small amount (200 milliliters) of gasoline for up to a month?
One possibility is if you can find small engine gasoline / alkylate gasoline sold in a one-liter container. That gasoline burns very cleanly, can be stored for about 4 years with no degradation and ...
- 15.3k
8
votes
Does converting an older motor to ethanol have significant risk or damage?
There's really no issue inside of the engine which should preclude you from switching from a regular petrol (gasoline) type fuel to ethanol. The reason for this is, ethanol doesn't affect the metal ...
- 162k
7
votes
MAZDA 3 2006 (UK) - poor acceleration then takes off at 3250 revs
My gut says it's likely to related to either a dodgy throttle position sensor or a faulty air mass meter. Whilst it is reporting no errors, it's worth doing diagnosis such as resetting the throttle ...
- 23.4k
7
votes
Haven't driven a car since the start of the pandemic; can it be driven without special measures?
One thing I would do is check all the fluid levels before starting it, even if only to drive it to get it serviced. Also the tyres may need some air. My brake discs rust easily in our wet climate, ...
- 819
7
votes
Accepted
Can I dilute 2-stroke gas and run it in my riding mower to get rid of it?
You should be able to run this straight through your lawnmower without issue. As long as you aren't running it through your car with a catalytic converter it should be just fine. The thing which 2-...
- 162k
6
votes
Accepted
Will 93 octane fuel burn completely in an 87 octane engine?
"Higher octane" only means more knock-resistant. It does not mean "harder-to-ignite" or "hotter burning."
A gasoline engine will not perform worse in any way on higher-...
- 1,199
6
votes
How can I start my lpg toyota Yaris with a broken gasoline fuel pump so I can bring it to the specific repair shop?
Any bodge involving using gravity to feed the petrol to the engine isn't going to work - it's a multipoint electronic injection system running at much higher pressures then gravity would produce. You ...
- 10.5k
5
votes
How can I start my lpg toyota Yaris with a broken gasoline fuel pump so I can bring it to the specific repair shop?
You won't be able to disconnect the fuel line and pour fuel into the fuel rail because this won't achieve the 60psi of fuel pressure that most non-direct injection fuel injected cars run at. You also ...
- 23.4k
5
votes
Wrong octane fuel
A modern car (say, post-1995) will run on lower octane gasoline with reduced performance (power, economy) and no other issues.
Older cars did a lot of nasty things ranging from occasional "pinging" ...
- 2,385
5
votes
Can I mix RON 97 fuel with RON 95 fuel in my car?
Absolutely you can mix different octanes of petrol (gasoline) in your car, it won't hurt your car and you may get better performance with a more expensive fuel. Premium fuels are generally better ...
- 17.7k
5
votes
Accepted
Ran 2 cycle without mixed gas :(
I think you're doing what you need to do. You won't really know (and I cannot tell you) how much damage you've done ... I'd suggest at this point, your engine is good and broke in! The fact you didn't ...
- 162k
5
votes
Does fuel go bad after some time?
It depends a lot on how well the fuel system was sealed. The most likely problem is that more volatile compounds will evaporate first, changing the properties of the gasoline. I once left a motorcycle ...
- 3,733
5
votes
Accepted
Does fuel go bad after some time?
Petrol fuel aging modes:
Evaporation. Depends on temperature and the availability of ventilation.
The fuel is a mixture of components that evaporate at different rate. A fuel depleted of volatile ...
- 2,385
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