RetiredbutWorking wrote: I tell you what, that list of ways to save and increase your mileage was written by a frickin genius. The first thing on the list is to walk. It lists such brilliant ideas as move closer to your destination and buying gas on Wednesdays. The Internet is so full of useless BS that people read and post as gospel. Coasting maybe illegal in some states, but that is to protect the normal people from the short bus people. I coast when it makes sense to me, but would probably not coast down the side of MT Everest.
SHORT BUS PEOPLE???
It is a reference used were I work for people of diminished capacity.
Something I read a long, long,long time ago comes to mind.
This was an article comparing Stick Shifts to Automatics.. It was mentioned that stick shifts the engine did not last as long as autos, even with a very "Timid" driver.
The reason was that with the auto sitting there loading down the engine it reduced vibration and dropping into neutral (Or sitting on the clutch in low) there was no load on the engine and thus it idled a bit faster and vibrated more.
As for saving gas.. I don't think dropping into neutral at red lights will save you anything at all... But... On this I may very well be wrong.
Nothin adds excitment like something that is none of your business John is Near Kenwood TS-2000 housed in a 2005 Damon Intruder 377
811.495 Unlawful coasting on downgrade; exception; penalty. (1) A person commits the offense of unlawful coasting on a downgrade if the person is the driver of a vehicle on a downgrade and the person coasts with the gears or transmission of the motor vehicle in neutral or with the clutch disengaged.
(2) This section does not apply to the driver of a motorized bicycle.
(3) The offense described in this section, unlawful coasting on a downgrade, is a Class D traffic violation.
Looks like you're legally ok coasting here on flat ground. Note that with most automatics, if you're in neutral and the engine dies, it will not shift back into gear. So you'd lose your engine braking, and after a bit, the power brake assist.
I'm reminded of a geologist that my father knew; he would put his automatic in reverse to stop. When informed that it was harmful to the transmission his reply was 'yes, but if I ever need my brakes for an emergency, they will be like new'. I think that any money you save in gasoline would be grossly offset by the cost of damage to the transmission. JMHO
kmessinger wrote: The Scan gauge on my Sprinter shows just decelerating is better for fuel usage than coasting. Coasting continues to use fuel, although a small amount, while engine compression, I think, uses much less as the intake valves are closed.
Also, as I recall, oil pressure drops considerably when idling as opposed to compression as does vacuum which effects who-knows-what in today's engines.
AFAIK, no diesel truck drivers coast down hills. They just gear down to the appropriate RPM. It would be good to hear from someone knowledgeable about diesel engines.
Regards,
Keith
Diesel engines do not close there intake valves when decelerating. They do shut fuel off, an there is no throttle plate thus the less engine braking vs a gas engine.
2003 Jayco 308fbs eagle 33' tt, towed by a 2003 Ram 3500 slt, quad cab dually, cummins diesel ho, trailer towing package, with 6 speed manual. Hauls better 1/2, 3 kids, myself, and a 2003 ez go clays car.. I have added so far, neon lights, clearance lights, back up lights, black light, lift kit, mud tires, and everything necessary to make the golf cart street legal. It's now ready to spend the winter in the garage for more mods. More neon, strobe lights, alarm, a pa system, maintance, and whatever else that comes along. This golf cart does wheelies and travels thru 7 inches of mud when need be. Two honda eu2000i gens twinned to supply the electrical power. Latest addition an 04 Honda Goldwing. [url]http://www.hometown.aol.com/rvnagain/myhomepage/profile.html[url]
I could have sworn I read two post from someone yesterday on this tread described going 90mph around a curve while coasting. I read an email from my DD today who flew an F-16 last week and reports "I did some aileron rolls and then went into a left 5 G turn." I believe I'd ride with her instead of that poster.
It'd be safer.
kmessinger wrote: The Scan gauge on my Sprinter shows just decelerating is better for fuel usage than coasting. Coasting continues to use fuel, although a small amount, while engine compression, I think, uses much less as the intake valves are closed.
Also, as I recall, oil pressure drops considerably when idling as opposed to compression as does vacuum which effects who-knows-what in today's engines.
AFAIK, no diesel truck drivers coast down hills. They just gear down to the appropriate RPM. It would be good to hear from someone knowledgeable about diesel engines.
Regards,
Keith
Diesel engines do not close there intake valves when decelerating. They do shut fuel off, an there is no throttle plate thus the less engine braking vs a gas engine.
Thanks for the correction. I knew something happened!
Regards,
Keith
The excellent adventures of Keith and Debbie. Observations about life, at home and on the road in our 2008 Sportsmobile Sprinter.
(Warning: Occasional sharp turns to the right.)
Wayne Dohnal wrote: From the Oregon statutes:
.................
Nice to know... However the OP was talking about dropping into neutral at red lights, train crossings and the likes.. NOT coasting, not even moving, but standing there with the foot on the brakes.
Offline
.jpg)
