I'm saving gas

Page 2 - Seeking answers? Join the AnandTech community: where nearly half-a-million members share solutions and discuss the latest tech.

AdamK47

Lifer
Oct 9, 1999
15,782
3,606
136
Most engines have some form of fuel cut off when you let off the gas. It won't make a difference if you let your foot off the gas peddle or put the car in neutral.
 
Nov 5, 2001
18,366
3
0
Originally posted by: DivideBYZero
Originally posted by: MikeyIs4Dcats
Originally posted by: DivideBYZero
Originally posted by: Hoober
Originally posted by: DivideBYZero
Originally posted by: MikeyIs4Dcats
as long as the engine is firing, you're still burning gas

No. My foot isn't on the gas pedal.

Then what's firing the combustion? :roll:

There isn't any. My foot is off the gas and the car is in neutral.

a combustion engine fires constantly if it is on. go back to grade school.

No. I'm saving gas.

I am intrigued by your ideas please add me to your monthly newsletter mailing list.
 

DivideBYZero

Lifer
May 18, 2001
24,117
2
0
Originally posted by: Philippine Mango
Also I bet the OP doesn't know but if you use engine braking, the ECU will adjust to using the same amount of fuel as when it's idle. I think the safest route would be to shift into a gear with the lowest resistance for the best mileage assuming of course you want to coast as far as possible since engine braking does just that, BRAKE and therefore slow you down...

Really? That IS interesting.
 

JulesMaximus

No Lifer
Jul 3, 2003
74,580
982
126
Coasting downhill is not going to save you any fuel whatsoever. When coasting in gear you are using zero gas anyway. Coasting in neutral you are actually using fuel to keep the engine at idle.
 

Shawn

Lifer
Apr 20, 2003
32,236
53
91
Originally posted by: DivideBYZero
Originally posted by: Hoober
Originally posted by: DivideBYZero
Originally posted by: MikeyIs4Dcats
as long as the engine is firing, you're still burning gas

No. My foot isn't on the gas pedal.

Then what's firing the combustion? :roll:

There isn't any. My foot is off the gas and the car is in neutral.

LMAO. So, you turn the engine off then?
 

DivideBYZero

Lifer
May 18, 2001
24,117
2
0
Originally posted by: JulesMaximus
Coasting downhill is not going to save you any fuel whatsoever. When coasting in gear you are using zero gas anyway. Coasting in neutral you are actually using fuel to keep the engine at idle.

No. If I coast in gear the engine will turn and I will lose fuel. :(
 

nakedfrog

No Lifer
Apr 3, 2001
62,785
18,979
136
Originally posted by: DivideBYZero
Originally posted by: nakedfrog
:laugh:
You smarmy bastard. I know what you're doing.
*looks closely at DBZ's avatar*

You just want to be a 'HYPERMILER' like me. :p

True, I also hope to save fuel. In bulk.
 

MisterServer

Senior member
Dec 29, 1999
271
0
71
i drive an audi with a trip display, when i coast downhill in neutral it says i'm getting 200 mpg.. if i leave it in 5th (last) gear i get the normal ~25 mpg
 

DivideBYZero

Lifer
May 18, 2001
24,117
2
0
Originally posted by: MisterServer
i drive an audi with a trip display, when i coast downhill in neutral it says i'm getting 200 mpg.. if i leave it in 5th (last) gear i get the normal ~25 mpg

Thank you, fellow HYPERMILER.
 

Philippine Mango

Diamond Member
Oct 29, 2004
5,594
0
0
Originally posted by: DivideBYZero
Originally posted by: JulesMaximus
Coasting downhill is not going to save you any fuel whatsoever. When coasting in gear you are using zero gas anyway. Coasting in neutral you are actually using fuel to keep the engine at idle.

No. If I coast in gear the engine will turn and I will lose fuel. :(

Here, take an electric motor, hook it up to a battery, what does it do?



Now, take a dewalt or some other power tool, clasp the end to the spinning part on the electric motor, grasp one hand, yell to your mother from your basement to get her ass down there, tell her to get a multimeter and attach the electrodes to the wires coming out of the multimeter.

What happens?
 

JulesMaximus

No Lifer
Jul 3, 2003
74,580
982
126
Originally posted by: DivideBYZero
Originally posted by: JulesMaximus
Coasting downhill is not going to save you any fuel whatsoever. When coasting in gear you are using zero gas anyway. Coasting in neutral you are actually using fuel to keep the engine at idle.

No. If I coast in gear the engine will turn and I will lose fuel. :(

Actually, you are wrong.
 

Philippine Mango

Diamond Member
Oct 29, 2004
5,594
0
0
Originally posted by: JulesMaximus
Originally posted by: DivideBYZero
Originally posted by: JulesMaximus
Coasting downhill is not going to save you any fuel whatsoever. When coasting in gear you are using zero gas anyway. Coasting in neutral you are actually using fuel to keep the engine at idle.

No. If I coast in gear the engine will turn and I will lose fuel. :(

Actually, you are wrong.

Actually he's trolling, just play along..
 

kevnich2

Platinum Member
Apr 10, 2004
2,465
8
76
Originally posted by: DivideBYZero
Originally posted by: MikeyIs4Dcats
Originally posted by: DivideBYZero
Originally posted by: Hoober
Originally posted by: DivideBYZero
Originally posted by: MikeyIs4Dcats
as long as the engine is firing, you're still burning gas

No. My foot isn't on the gas pedal.

Then what's firing the combustion? :roll:

There isn't any. My foot is off the gas and the car is in neutral.

a combustion engine fires constantly if it is on. go back to grade school.

No. I'm saving gas.

If you honestly believe that, your an idiot.
 

JulesMaximus

No Lifer
Jul 3, 2003
74,580
982
126
Originally posted by: Philippine Mango
Originally posted by: JulesMaximus
Originally posted by: DivideBYZero
Originally posted by: JulesMaximus
Coasting downhill is not going to save you any fuel whatsoever. When coasting in gear you are using zero gas anyway. Coasting in neutral you are actually using fuel to keep the engine at idle.

No. If I coast in gear the engine will turn and I will lose fuel. :(

Actually, you are wrong.

Actually he's trolling, just play along..

I know. He's still wrong though. :laugh: