Questions tagged [gasoline]

Colloquial term for 'gasoline', a liquid petrochemical refined from crude oil and used in internal combustion engines as fuel.

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10 answers
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What are the benefits of premium (high octane) petrol?

Here in the UK it's common for petrol (gas) stations to offer both regular and "premium" unleaded petrol. The premium stuff is (naturally) more expensive, and I've often wondered what the actual ...
Simon Whitaker's user avatar
59 votes
6 answers
55k views

Why do heavy vehicles almost always use diesel engines?

I have always wondered why heavy vehicles such as large trucks and buses almost always use diesel engines, whereas in light cars there is a choice between diesel and gasoline engines. Engine ...
juhist's user avatar
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21 votes
5 answers
26k views

Should I really keep my gas tank at least half full?

I've seen a number of sources that state you should keep your car's gas tank at least half full, some of which saying it's only important in winter. Some examples: http://www.osceolagarage.com/why-...
Daniel Griscom's user avatar
20 votes
5 answers
6k views

How to (relatively safely) store a small amount (200 milliliters) of gasoline for up to a month?

In my country of residence (developing nation) I sometimes see people stopped alongside the road because they apparently forgot to buy fuel or couldn't afford it. I also would like to be able to push ...
Sebastiaan van den Broek's user avatar
18 votes
5 answers
12k views

Why not use gasoline on diesel engines or vice versa?

I've read gasoline engines use sparks to ignite the mixture, but diesel engines use just compression which can't be done in gasoline engines due to high compression ratios which can cause engine ...
user3407319's user avatar
18 votes
2 answers
321k views

What happens if you put the wrong kind of gas in your car?

I (like most people) just use regular unleaded gas in my car and always have. But once I accidentally put in the premium kind, mixing it with the unleaded that was already there, and I thought for ...
temporary_user_name's user avatar
17 votes
5 answers
10k views

Haven't driven a car since the start of the pandemic; can it be driven without special measures?

Because they're older, my in-laws have been in quarantine since early March and haven't driven their car at all. It's been sitting in the driveway in New Jersey (USA) the whole time, in mostly above-...
Joshua Frank's user avatar
17 votes
4 answers
43k views

Why does diesel engine have redline much lower than petrol engine redline?

Why do diesel automotive engines redline at around 4500 rpm whereas petrol ones go to 6500-8000 rpm? Does this have something to do with the compression ratio?
saurabh64's user avatar
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14 votes
8 answers
18k views

Do cars consume less gasoline when the tank is full?

I noticed While driving my car the fuel refills last me a lot longer when I go for the full tank over the half tank. I feel that it takes a lot longer to go through the upper half of the tank than the ...
Anwar Elhadad's user avatar
14 votes
6 answers
63k views

Should I use gasoline 87, 89 or 93 on 2016 RAV4 SE

I read many articles online and people have different opinions about this issue. Some say 89 is the best for acceleration. Others say 87 is just fine. I'm worried only about the health of my car. ...
Emily's user avatar
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12 votes
4 answers
6k views

Why do we mostly use fossil fuel instead of a more reliable and larger sum fuel?

Why do we mostly use fossil fuel instead of something like... Alcohol? We used it in a portion of our gas, so why don't we use it in greater quantities? Obviously there's a reason. My guess is ...
LostPecti's user avatar
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12 votes
3 answers
6k views

Wrong octane fuel

I have a 2014 Fiat Punto and have been using 92 octane gas. I have never read the manual, but am now told I should use 95. Should I use what is in the tank before filling with 95 or is it OK to mix ...
Judith hb's user avatar
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11 votes
3 answers
5k views

Toyota Prius Mk2 "gasoline only" operation mode

I want to get a used Toyota Prius Mk2 (XW20). I do not necessarily need to operate it in hybrid mode (gas + electric) and I am OK with operating it in a kind of "gasoline only" mode (because of a ...
Kozuch's user avatar
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9 votes
5 answers
203k views

How long will gas stay fresh in a five gallon plastic container

How long will a 5 gallon plastic containers of fuel stay fresh?
robert hodge's user avatar
8 votes
8 answers
8k views

Why does a petrol engine need to maintain an air-fuel ratio, while a diesel engine doesn't?

This simple question has been bugging me for a while. The amount of fuel injected into a petrol engine is calculated according to the amount of air entering through the throttle valve (as measured by ...
I have no idea what I'm doing's user avatar
8 votes
3 answers
2k views

Can I dilute 2-stroke gas and run it in my riding mower to get rid of it?

Over the winter I needed a chainsaw, I mixed a gallon of gas for it and unfortunately it just refused to start which gave me the motivation to purchase an electric chainsaw which did the job ...
Sidney's user avatar
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8 votes
3 answers
3k views

My BMW 325xi smells like gas

It is difficult to start my BMW it runs rough and smells like raw gas from the exhaust pipe. My check engine light is on. What could be the problem? I just had the engine replaced I am over 8,000 ...
Diane N's user avatar
  • 81
8 votes
2 answers
485 views

What is the Capacity of Gas Station Pumps After the Fuel Mixing Point?

I ride a vehicle with a small fuel capacity - my typical fill-up is about 3 quarts. What I want to know is if I'm filling up at a pump that has one hose for all grades do I get the grade I select, or ...
Sean Lake's user avatar
  • 181
7 votes
3 answers
2k views

Does the mileage indicate the quality of the gas?

I've been getting gas for my 2010 Ford Taurus at Get-go and always was able to get a full tank. The front panel indicated 420 miles left to empty Example: But now for a couple of months, I wasn't ...
Grasper's user avatar
  • 351
7 votes
1 answer
27k views

Why is there a hissing noise when I open my petrol cap?

When I fill up with fuel, there is often a loud hissing noise, as if you are opening a bottle of fizzy drink or something whenever I unscrew the petrol cap. It also seems like there are vapours ...
George's user avatar
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7 votes
2 answers
3k views

Petrol vehicles, what are the advantages and disadvantages of a turbo charger?

Diesel vehicle often use turbo chargers. Petrol vehicles frequently do not. What are the advantages and disadvantages of using a turbo charger on a petrol engine?
pandeeswaran's user avatar
7 votes
1 answer
7k views

How long can "Stabil"ized gas stay fresh? and can it be improved?

I had my sportbike in storage for at least 3 years. It is Electronic Fuel Injected. It had a full tank of Premium Gas (Shell or Mobil). I put in STA-BIL to preserve the gasoline. Is the gas beyond ...
ReturningJedi's user avatar
7 votes
1 answer
3k views

2009 Hyundai Sante Fe - gas smell in cabin after replacing fuel sending unit. has been repaired 4x's now

Fuel sending unit replaced. Since then it has gas smell in car. It has been redone by mechanics four times now but still has a gas smell when the gas level is in the first quarter of the tank. Cap ...
Carrie's user avatar
  • 71
6 votes
2 answers
3k views

Accidentally put regular gas in Infiniti G37

So my 2013 Infiniti G37 requires premium gas (91 octane) but I just got it so I didn’t know, and I accidentally put regular gas (87 octane) into the car. I filled my tank almost fully with regular gas....
Kyle's user avatar
  • 95
6 votes
4 answers
3k views

Does fuel go bad after some time?

I have my bike (bought in mid-2019) sitting idle for over a year due to covid, as I went back to my hometown and left my bike in my office parking. Before leaving I refueled by bike with premium fuel ...
Prashant Kumar's user avatar
6 votes
2 answers
10k views

Can diesel engine be harmed as easily as gasoline engine by over-revving?

There is an excellent Q&A about why diesel engines have lower redline RPMs (about 4500 RPM) than gasoline engines (about 6500 RPM). The reason is related to the combustion of diesel fuel. However,...
juhist's user avatar
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6 votes
1 answer
63 views

1998 Oldsmobile Intrigue - Takes fuel super slow

I think someone tried to siphon my gas tank and now it fills super slow. Like ten minutes slow. So what part might be damaged and would it be in the fuel tank itself or in the fuel tank neck?
Kev's user avatar
  • 61
6 votes
1 answer
172 views

What is the problem if my car's engine stops running in the middle of a ride?

My car's engine frequently stops in the middle of a ride. Its an old model of Hyundai Sonata 2004. This happens especially in high gears(3,4) and faster speeds (like 60-70 mph). It has also happened ...
ARK's user avatar
  • 191
6 votes
1 answer
151 views

Why is there no drop-in biogasoline like there is drop-in biodiesel (e.g. NEXBTL)?

I have always wondered why there is no drop-in biogasoline like there is drop-in biodiesel. For example, NEXBTL by Neste can be run at 100% mixture in conventional diesel engines. It is different from ...
juhist's user avatar
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6 votes
1 answer
1k views

2001 Subaru Legacy L Wagon - Gas smell and light shaking

So... It is really freezing and has been really cold these past few days. But, my 2001 Subaru Legacy L Wagon started acting up. First, here are things I know been replaced before I got it - Tires, ...
KingsInnerSoul's user avatar
5 votes
1 answer
3k views

2020 explorer will not fill up

My 2020 ford explorer will not let me fill up. I tried to fill up yesterday and it only let me put 0.336 gallons in and it started spitting it back out. I only have between three quarter and a half in ...
user61629's user avatar
5 votes
2 answers
21k views

Hands still smell like gasoline after multiple washings, it is safe to handle food?

I have been reparing my weed wacker, so I have the gasoline/oil mixture on my hands. I have washed them twice with hand soap, once with orange soap scrub, once with dish soap, once with hand ...
Scott Taylor's user avatar
5 votes
2 answers
11k views

Will 93 octane fuel burn completely in an 87 octane engine?

This is a little more specific than the "wrong fuel" question: I'm looking for the long term impact of using a higher-octane fuel in an engine designed for lower octane fuel. Not quite diesel in a gas ...
Shrout1's user avatar
  • 401
5 votes
2 answers
506 views

Old, oily, wet gasoline. What to do with it? [duplicate]

I have a small amount (less than a gallon) of gasoline that's been in a can for two years. It has oil mixed in for 2-stroke engines. The can sprung a leak and rainwater leaked inside. Probably only a ...
bitsmack's user avatar
  • 662
5 votes
4 answers
5k views

Using regular unleaded gasoline in a Lexus RX330

Is it OK to use Regular Unleaded Gasoline in a 2005 Lexus RX330? In the past I have used Super but am now using Regular. So far no problems.
ahamed's user avatar
  • 71
5 votes
2 answers
258 views

Is it a good idea to top off the gasoline with higher octane fuel in a specific case?

When topping off the gasoline in a vehicle that is rarely driven (100 miles/month), is there any advantage in topping it off with a higher octane gasoline? I've heard stories that the octane of ...
End Anti-Semitic Hate's user avatar
5 votes
1 answer
820 views

Dust in gasoline

I noticed some dust in the funnel when I filled my car's tank in a an emergency. Is this dust harmful to the engine? Will the fuel filter remove it?
jerzydevil's user avatar
5 votes
1 answer
3k views

Starting fluid, does it require a spark or autoignite?

If a four stroke gasoline engine (inline-four, digital fuel injection) starts with starting fluid (but not without it, and stops firing when the spray is removed), is this an indication that the spark ...
AttributedTensorField's user avatar
5 votes
2 answers
2k views

Do I need to eliminate old gas before changing fuel injectors?

I have a truck with a full tank of gas (12-16 gallons?) that's been sitting for 12 months and I'm about to change the fuel injectors. The truck can barely make it around the block due to stalling out ...
user avatar
5 votes
1 answer
1k views

Re: Dry Gas (specifically STP Water Remover)

Well, it's butt cold here in Maine & my car wouldn't start. It has a 1/4 tank of gas & I was unable to add 1/2 bottle of dry gas as it comes out very fast. So despite the directions on the ...
VJB 's user avatar
  • 53
5 votes
3 answers
594 views

Evaporator canister purge system advice needed

1995 Blazer - 4.3 L Vortec V6 CMFI (vin W w/ PCM) 230,000 miles There are no trouble codes. This is a OBD-I or 1.5 system from a GM transitional year (I have the OBD-II style connector). I have ...
Sparky's user avatar
  • 476
5 votes
1 answer
85 views

Gas filled my engine

I'm a little puzzled on my 33 I have a 302 ( stroker 363 )) Dart block with brodex heads with a small blower. after blowing up my power glide I pulled the engine and just now reinstalled it. after ...
Mark's user avatar
  • 49
5 votes
0 answers
108 views

CEL comes on when using fuel with ethanol

I have 3 Ford vehicles: a 2001 Taurus, a 2006 Taurus, and a 2008 Explorer. All of them have V6 engines. The check engine light for all 3 comes on at times. If I use gasoline without ethanol, the CEL ...
W.ROYCROFT's user avatar
5 votes
0 answers
514 views

What causes more gas consumption - Idling with AC or Heat? [duplicate]

So I have begun doing some research on the effects of idling. So my question is, does idling with the AC or heater on affect how much gas is given off? If possible, please give the percent of extra ...
Pranav Wadhwa's user avatar
4 votes
3 answers
3k views

What causes more gas consumption - Idling with AC or Heat?

So I have begun doing some research on the effects of idling. So my question is, does idling with the AC or heater on affect how much gas is given off? If possible, please give the percent of extra ...
Pranav Wadhwa's user avatar
4 votes
3 answers
4k views

Is it necessary to turn off the engine while refuelling?

At petrol stations in Australia, there are always several signs that say "Turn off engine while refuelling" (or something of the sorts). Is this necessary to do, and why, or is just something that is ...
Tas's user avatar
  • 413
4 votes
3 answers
242 views

What non-driver, non-terrain factors can affect vehicle miles per gallon?

I've been tracking the mileage on my 2015 VW Golf (a non-intercooled turbo, but not diesel, thank goodness). Of course, my driving habits and highway/city balance influence things greatly, but beyond ...
Daniel Griscom's user avatar
4 votes
1 answer
3k views

Old gas in 2 cycle engine

I have a 2 stroked engine that sat for over 2 years. I drained the gas and can get it to turn over when I put starter fluid in the carb. it is blowing out a water substance from the muffler and cuts ...
Jim's user avatar
  • 41
4 votes
2 answers
295 views

Worried I put in wrong grade of gas

I selected the wrong grade of gas, but then I quickly pushed the correct button on the pump. Does it change after it starts?
user23690's user avatar
4 votes
1 answer
356 views

Is it fine to use higher octane gasoline than what is recommended on the fuel cap sticker

I've got a 2000 W202 Mercedes C240. It's got a V-shaped, six cylinder gasoline engine. On the fuel cap, it says RON 95 EN 228. And in the manual also it says "Use only Premium Unleaded petrol". I ...
Mikayil Abdullayev's user avatar

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