I know we should turn off the engine when we expect a long delay or waiting someone. What about those short wait like behind a red light for less than a min. I have an automatic and if I switch from D to N, does it make any difference in gas consumption? I notice the idle RPM goes a little higher when switch to N compare with when I leaves it on D.
going to neutral not only saves on gas, but saves on brakes also. brakes are air cooled, if you are traveling at speed and have to stop for a light putting your automatic transmission in neutral will allow the brakes to cool down. easier on the transmission also. better yet, coast to the light in neutral and leave it there til light changes
Yes I am a firm believer that neutral is a little better on the engine at a stop, as for actual fuel savings I do it mostly out of principle. That is since hypermiling is a mindset to me this is a part of it, there are a few others, it's like being thrifty I do some things even if it doesn't save anything just because the mind gets set in that way.
A FE gauge should be standard equipment in every vehicle.