Depends on how long you sit there. If I just miss a left turn light, I know I will be there for 5 minutes, so I will frequently turn it off. As for Neutral, maybe my car is weird, but when I have my foot on the brake in Drive, and then shift in to Neutral, the RPMs climb about 200-300. Not much, but if you're trying to eek out every single drop you can, that's not the way to do it.

Putting the car in neutral at stoplights is not going to save you any gas. Next time you have a chance watch the RPM's while you're in D and stopped at a stoplight, then shift to N and see if they change. You'll see that the car idles at the exact same RPM's in D as it does in N so you won't save any gas by putting it in neutral. The best way and probably only way to save gas at a light is to shut the car off.

EDIT: Sorry Ace didn't see your post.

The most wear to the car comes from cold oil and waiting for pressure to build in the oil lines.

Restarting a warm car only wears the starter since the oil filter & lines are already full if anything it allows the engine a few moments to cool and takes the stress off the torque converter.

Well Herc I have a story now for you...

So it's sunday and I don't get payed till monday so I'm driving around with the gas light on. So I end up at a friends house but later decided to run home and grab my computer (we were going to get a lan party going) and as I'm on my way back to his house (it's now past midnight, and since I'm 17 I have curfew which is 11 weekdays(and sunday), 12 weekends )I am about to go through the light when it turns red, so since the needle is on E I figure I'll turn it off since this light is fairly long. Now I'm sitting there with my engine off and I notice this cop was parked in the parking lot across the street and he proceeds to walk over. He asks "Son what do you have your car off for? and you realize it's past curfew." and I told him "well I'm super low on gas and I want to save as much as possible" and he goes "Huh? well I'll have to give that a try, thanks for the tip you can go on and get outa here."

Cool. I was expecting something to go horribly wrong lol.

Oh and when I restarted it my car turned red.

But other than that nothing went wrong.

your car turned red???? you got chameleon colors on that beast?

What color did the GPX sticker turn?
Do you mean you turned red when he walked over?

black...

baba yay another red car:D lol thats funny....i got the best way to save gas.....walk

hard to do that when my drive to work is 45 minutes.

Also has anyone ordered from "autopartswarehouse.com" and was there anything wrong? And would either of these O2 sensors be ok to get?

O2 Sensor 1

O2 Sensor 2

Also does anyone know why my ABS and Trac Off light would be on?

Yes I have, and they screwed up twice.
I wouldn't buy those universal ones, or at least call them, but that doesn't mean they won't screw up still.
They sent me the wrong mirrors. I called them and arranged to return them. So I told them exactly what I needed over the phone, spoke to a manager. So I get another set and still wrong. I ended up splicing the wires on the new ones to get them to work with the harness in the door.
Best bet is ZZP man. I wouldn't skimp out on an 02 sensor eithr, if you are actually trying to improve mpg. ZZP is the lowest I believe.

Then should I get the "race front" O2 since their out of the Ac Delco?

Who is out of them?
Go with something other than Bosch, is what the community is saying. I have a Bosch and haven't had issues. I didn't know not to go with Bosch, but I did. I have Bosch front 02 sensor and Bosch Wideband sensor. Couldn't swap the wideband, came with the kit.

ZZP is out of The Ac Delco O2 Sensor.