If a gas pump only has one handle, is there residue from different octanes in the pump / am I necessarily getting "my" octane?

If a gas pump only has one handle, is there residue from different octanes in the pump / am I necessarily getting "my" octane?
by

1 Answer

Answer :

answer:There may be a little (less than an ounce or two) residual gas left in the hose. It will not be enough to effect the next customer at all. The hoses are designed to empty when the nozzle clicks off, that is one reason why it takes a couple seconds between selecting your gas and the pump clicking on. It is priming the pump. If the hose was kept full of gas, there would be no lag when you open the nozzle when you started pumping
by

Related questions

Is there really any reason to buy 89 octane gas over 87?

Description : Is there really any reason to buy 89 octane gas over 87?

Last Answer : answer:I heard from a potentially reliable source (50/50) that half of the time, the people who put the different grades of gas in the pumps don't even do it correctly. So, if you buy ... . Personally, I don't know anyone that's ever used anything but regular. Unless their car requires diesel.

Catalytic cracking compared to thermal cracking of residue of vacuum distillation of crude oil (A) Gives higher yield of petrol (B) Lower octane number of petrol (C) Higher sulphur content in the product (D) Higher gum forming material in petro

Description : Catalytic cracking compared to thermal cracking of residue of vacuum distillation of crude oil (A) Gives higher yield of petrol (B) Lower octane number of petrol (C) Higher sulphur content in the product (D) Higher gum forming material in petro

Last Answer : (A) Gives higher yield of petrol

What's the optimal way to pump gas?

Description : What's the optimal way to pump gas?

Last Answer : answer:I always fill up the tank when the marker is at the ¾ mark. That is because gas stations here are few and far between and there are odd and fairly regular power outages. No power, no gas. The marker ... try to keep ½ tank always. And when I pump, I stand upwind so I don't breathe the fumes.

I believe a dishonest car mechanic didn't replace my fuel pump. Is there a way to tell if the pump is new?

Description : I believe a dishonest car mechanic didn't replace my fuel pump. Is there a way to tell if the pump is new?

Last Answer : What makes you think he didn’t do the work he said he did?

How much do you think it will cost to get a car door handle put back on?

Description : How much do you think it will cost to get a car door handle put back on?

Last Answer : Is there broken metal? Plastic, is it just a broken bolt?

How do you handle a false accusation?

Description : How do you handle a false accusation?

Last Answer : Shoot her with your gun.

Advice on how to handle awkward Craigslist encounter?

Description : Advice on how to handle awkward Craigslist encounter?

Last Answer : Maybe you can tell him that you’re not going to need to do the repairs at all? You got a great deal on a different car?

How would you handle this?

Description : How would you handle this?

Last Answer : File under “live and learn.” Skip dealing with STS, have Firestone repair the drain plug, and be happy you found a good mechanic.

Is there a term to describe the pulling of a locked car door handle while the driver is unlocking it simultaneously?

Description : Is there a term to describe the pulling of a locked car door handle while the driver is unlocking it simultaneously?

Last Answer : This is a GREAT question. I do this all the time (I'm the puller.) I wish I knew the term myself and am interested to see what comes back!

I have a very good 2006 Honda Civic, but am thinking of getting a newer car. Any suggestions. I love the Civic.

Description : I have a very good 2006 Honda Civic, but am thinking of getting a newer car. Any suggestions. I love the Civic.

Last Answer : Why not keep the car until you actually start to have trouble with it?

Getting rid of sticker residue?

Description : Getting rid of sticker residue?

Last Answer : Try a product called Goo-Gone.

Have you ever seen a wreck getting ready to happen and there was nothing you could do but watch?

Description : Have you ever seen a wreck getting ready to happen and there was nothing you could do but watch?

Last Answer : Yay!! It let me ask a question!

If my car was broken into, and I find the stolen items in a pawn shop, what rights do I have regarding getting it back?

Description : If my car was broken into, and I find the stolen items in a pawn shop, what rights do I have regarding getting it back?

Last Answer : This happened to someone I know. They went looking right away after the robbery, and found their stuff in a nearby pawn shop. They contacted the police, and got much of their stolen jewelry and silverware back.

Any ideas on how to avoid getting your credit hurt, before-during-after a care REPO?

Description : Any ideas on how to avoid getting your credit hurt, before-during-after a care REPO?

Last Answer : Make the payments for him, and sell the car before it gets repossessed. And in future don’t co-sign loans for anyone you’re not willing to sacrifice your credit history and your savings for.

A colourless water-soluble compound on strong heating liberates a brown colored gas and leaves a yellow residue that turns white on cooling. An aqueou

Description : A colourless water-soluble compound on strong heating liberates a brown colored gas and leaves a yellow residue that turns white on cooling. An aqueou

Last Answer : A colourless water-soluble compound on strong heating liberates a brown colored gas and leaves a yellow residue that turns ... (3))_(3)` D. `NaNO_(3)`

`"Orange solid"overset(Delta)rarrunderset(gas)"diamagnetic"+underset("residue")"green"` `underset("solid"(X_(2)))"Orange"overset(Delta)rarrunderset("m

Description : `"Orange solid"overset(Delta)rarrunderset(gas)"diamagnetic"+underset("residue")"green"` `underset("solid"(X_(2)))"Orange"overset(Delta)rarrunderset("m

Last Answer : `"Orange solid"overset(Delta)rarrunderset(gas)"diamagnetic"+underset("residue")"green"` `underset("solid"(X_(2)))" ... (4))_(2)Cr_(2)O_(7),KNO_(3)`

Which is the most ideal feed stock for 'coking' process used for the manufacture of petroleum coke? (A) Naphtha (B) Vacuum residue (C) Light gas oil (D) Diesel

Description : Which is the most ideal feed stock for 'coking' process used for the manufacture of petroleum coke? (A) Naphtha (B) Vacuum residue (C) Light gas oil (D) Diesel

Last Answer : (B) Vacuum residue

To handle smaller quantity of fluid at higher discharge pressure, use a __________ pump. (A) Reciprocating (B) Centrifugal (C) Volute (D) Rotary vacuum

Description : To handle smaller quantity of fluid at higher discharge pressure, use a __________ pump. (A) Reciprocating (B) Centrifugal (C) Volute (D) Rotary vacuum

Last Answer : (A) Reciprocating

Which of the following surgeons stopped a cholera epidemic in London by removing the pump handle of a contaminated pump? a. Lister b. Snow c. Koch d. Pasteur

Description : Which of the following surgeons stopped a cholera epidemic in London by removing the pump handle of a contaminated pump? a. Lister b. Snow c. Koch d. Pasteur

Last Answer : b. Snow

How can you determine the largest impeller that a pump can handle?

Description : How can you determine the largest impeller that a pump can handle?

Last Answer : The motor amperage should be measured in the field with the pump discharge valve wide open. Subtract about 10% from the pumps maximum rated amperage. Then the maximum impeller size can be ... minus 10% A1 = Current operating amperage d2 = Maximum impeller diameter d1 = Current impeller diameter

Do you get better gas mileage by car if you use higher octane gas?

Description : Do you get better gas mileage by car if you use higher octane gas?

Last Answer : Yes, higher octane gas does give higher gas mileage for your car. However, the increase in gas mileage may not as great as the increase in the price of the higher octane gas.

Octane of natural gas is a) 60-80 b) 80-100 c) >100 d) <60

Description : Octane of natural gas is a) 60-80 b) 80-100 c) >100 d)

Last Answer : Answer: c Explanation: The octane number of natural gas is always >

Mercaptans are (A) Low boiling sulphur compounds(B) Added in LPG cylinders to detect gas leakage by its smell(C) Undesirable in petrol, as they reduce its octane number(D) All (A), (B) and (C)

Description : Mercaptans are (A) Low boiling sulphur compounds (B) Added in LPG cylinders to detect gas leakage by its smell (C) Undesirable in petrol, as they reduce its octane number (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

Which of the following contains high content of lead? (1) Coal (2) Cooking gas (3) High octane fuel (4) Low octane fuel

Description : Which of the following contains high content of lead? (1) Coal (2) Cooking gas (3) High octane fuel (4) Low octane fuel

Last Answer : High octane fuel

Can you mix different octane petrols?

Description : Can you mix different octane petrols?

Last Answer : It's not recommended to mix different octane petrols, as this can affect the fuel's overall octane rating and potentially cause engine damage.

When stranded in a car on the highway, in the winter, can you run out of gas idling?

Description : When stranded in a car on the highway, in the winter, can you run out of gas idling?

Last Answer : Yes you can, sorry to say. Rule is don’t go anywhere in the winter with less than a half a tank of gas. Have blankets and snacks, maybe a couple bottles of water too!

How long does a car last when idling with a full tank of gas?

Description : How long does a car last when idling with a full tank of gas?

Last Answer : A rule of thumb we used was: a passenger car burns about 0.5 gallons of fuel per hour while idling. If you have a 12 gallon tank you can figure it will idle for 24 hours. The range is large ... if you have air conditioning running your flow rate will be double so your tank will be empty in 12 hours.

Why would you follow or "like" a gas station brand on social media?

Description : Why would you follow or "like" a gas station brand on social media?

Last Answer : Hell no, I could care less. haha Maybe they offer some sort of little promo rewards or something to lure in their followers, I have no idea.

Could replacing the alternator on my '07 Camry improve my gas mileage?

Description : Could replacing the alternator on my '07 Camry improve my gas mileage?

Last Answer : I know little about this stuff, but did your odometer get adjusted? How accurate do you think it is?

Does a 1986 Chevrolet Camaro IROC Z28 has a vented gas cap?

Description : Does a 1986 Chevrolet Camaro IROC Z28 has a vented gas cap?

Last Answer : If it’s an ‘86 you need a non-vented cap.

Gasoline: Does it really matter which gas you purchase?

Description : Gasoline: Does it really matter which gas you purchase?

Last Answer : answer:It does. Higher octane ratings are more resistant to knocking . Engines with higher compression and/or that have forced induction (turbos or superchargers) are more prone to pinging and thus ... improvement to actually lower the $/mile despite the added fuel cost) and was slightly peppier.

Towing gas milage - reality?

Description : Towing gas milage - reality?

Last Answer : We have a ford ecoboost truck and we tow an open trailer with a car on it, and we get around 12 miles to the gallon, sometimes as high as 13. Regular gas. We drive typically 70 MPH. I think the weight of the trailer with the car is 5,500? Not 100% sure.

What would cause my Jeep to have sudden HORRIBLE gas mileage?

Description : What would cause my Jeep to have sudden HORRIBLE gas mileage?

Last Answer : I’m guessing the flanges helped improved gas mileage, and now you removed them. What else would it be?

Does a car burn more gas when the heater is on?

Description : Does a car burn more gas when the heater is on?

Last Answer : Yes, a little, but much of the heat is generated by operating the car.

Anyone else annoyed they put 10% ethanol in our gas in the US, and might increase it to 15%?

Description : Anyone else annoyed they put 10% ethanol in our gas in the US, and might increase it to 15%?

Last Answer : I’m still not convinced it really helps with anything other than giving corn growers an excuse to grow more corn.

How much does your A/C affect your gas economy?

Description : How much does your A/C affect your gas economy?

Last Answer : You will use about 10% more gas with the A/C on. How much more will vary depending on the outside temperature and how cold you want the car to be inside.

What are some REAL ways to save on gas?

Description : What are some REAL ways to save on gas?

Last Answer : answer:Walk, ride a bike, take public transit. The most effective ways are to make sure your engine is in tune, your tires are properly inflated, and you drive conservatively.

What happens if you keep your foot pressed all the way down on the gas pedal while the car is on and in park?

Description : What happens if you keep your foot pressed all the way down on the gas pedal while the car is on and in park?

Last Answer : You blow the engine if it doesn’t have a rev delimiter?

What's your preferred gas station?

Description : What's your preferred gas station?

Last Answer : Shell! and I use premium (92). Call me crazy but I can feel the performance difference in the way my car drives.

Does it matter where I buy my gas?

Description : Does it matter where I buy my gas?

Last Answer : It doesn’t matter. They mostly come from the same refineries. All the additive nonsense about cleaning your engine (especially valves etc…) is just nonsense. Some of the additives may possibly be good for brand new engines.

What kind of gas mileage does a 2000 Nissan Maxima SLE get?

Description : What kind of gas mileage does a 2000 Nissan Maxima SLE get?

Last Answer : answer:Here are the government figures. “Fuel Type Regular MPG (city) 19 MPG (highway) 25 MPG (combined) 21 Fuel Economics Cost to Drive 25 Miles $3.07 Fuel to Drive 25 Miles 1.19 gal Annual Fuel Cost $1842”

Are current gas mileage estimates low?

Description : Are current gas mileage estimates low?

Last Answer : They are very hard to achieve without “economy driving” techniques. Jump in put your foot down a bit and you won’t come close. But they are real in the sense that they are achievable.

What's the procedure when you run out of gas on a motorcycle while riding?

Description : What's the procedure when you run out of gas on a motorcycle while riding?

Last Answer : I would make sure you have enough gas next time you ride. Fool proof.

Do you have any gas saving hints or tips?

Description : Do you have any gas saving hints or tips?

Last Answer : Go at speed limit. If you go over, you waste more gas and you can get a ticket.

Does cruise control save gas?

Description : Does cruise control save gas?

Last Answer : It saves gas, since you’re not accelerating. Keep using it, unless you’re going up and down hills.

Does BP gas really do what it claims?

Description : Does BP gas really do what it claims?

Last Answer : The better question is… will you notice if it does?

If you're worried that your car is going to run out of gas before you get to the gas station, what's the best way to drive to get the most out of the last drops of gas?

Description : If you're worried that your car is going to run out of gas before you get to the gas station, what's the best way to drive to get the most out of the last drops of gas?

Last Answer : The thing that uses the most gas is rapid acceleration, so you want to avoid that and drive at a constant, low speed (obviously coasting as much as you can), trying to break as little as possible) ... the last drops of gas out of their tanks. you can listen online at http://www.sierraclubradio.com

whats the price of gas in your town?

Description : whats the price of gas in your town?

Last Answer : 2.59 here in San Antonio, TX. I feel your pain :)

How much better is the gas milage for a manual transmission?

Description : How much better is the gas milage for a manual transmission?

Last Answer : answer:5-15% according to Wikipedia, although driver style definitely factors in. Wikihow also highlights power advantages of manual transmission in that you'll be able to utilize the full range ... Variable Transmission (CVT) somewhere in between automatic and manual in terms of fuel efficiency.

Can adding acetone to your gas tank actually increase your gas mileage?

Description : Can adding acetone to your gas tank actually increase your gas mileage?

Last Answer : answer:I’ve never tried it, nor have I heard of anyone putting acetone in their gas tank…but I checked snopes.com, and they say it’s false. http://www.snopes.com/autos/techno/acetone.asp