crazyjetskier

k i have a 5 speed ex coupe and i always hear that manual cars get better gas milege than automatics? why is this? i mean how and why? whats so special?

sailorboy

Auto's have some allowance for slippage, it's how they can stop in gear without stalling. In high gear, most automatics "lock-up" when you ease off the throttle and cruise, it feels like an extra gear shift. It helps with fuel economy on the highway. A clutch in a manual trans. doesn't (usually) slip once you lift all the way off and fully engage it.

crazyjetskier

Grey

iTrader: (61)

Not sure about the whole slippage thing, but basically a manual transmition has 5 gears instead of 4. This allows for finer control of the rpm's during all speeds. The lower the rpm's the lower the gas consumption.

crazyjetskier

someone on here told me that when u shift not to floor it but just press on gas normally and shift at high rpms cuz u get better gas??

Grey

iTrader: (61)

<< someone on here told me that when u shift not to floor it but just press on gas normally and shift at high rpms cuz u get better gas?? >>



Shift at high rpm's? No! shift at the shift points and accelerate lightly. Read the manual. It's all in the manual.

crazyjetskier

well i dont shift at high rpms unless im racing or something usually i shift around 3-4 rpms

Diznavis

if youre going fo gas mileage, then shift early, but if you want speed without killing your gas mileage, then it is better to keep it in gear longer and not floor it.
i just got 41.5mpg from my 5-speed ex coupe [IMG]i/expressions/face-icon-small-smile.gif[/IMG]

avenger

here be da 411 ya dig:

autos have a torque converter between the flywheel and the transmission, and this torque converter relies on hydraulic pressure to operate. The engine usually must turn faster than the transmission in order to keep this pressure up. Some autos have lockup clutches that will (at cruising speed) lock up the converter and allow it to be 1:1 like a manual....

for more information

right diggity here

sailorboy

Yah, what Avenger said. Thanks for the translation Avenger! You did a lot better job than I did.

crazyjetskier

k thanks