overdrive chooses the most fuel efficent gear but the savings will only be noticed on the highway. try not to use o/d when towing though, even on the highway. it's hard on the trans. YES!! Seriously? Just to add to the first two answers... Overdrive will kick in once the truck reaches approx. 55 mph. It shifts the transmission into a higher gear, which provides a higher output rotation at the wheels than the lower gears at the same input rotation/power. This translates into less work, and therefore less fuel consumption, to maintain the same speed. When the PCM determines that the truck needs more power rather than speed, it will downshift as needed. If you are towing, it will have to downshift more often, making for less fuel efficient operation. If you have a tachometer, glance at it as your transmission is shifting and try to track your RPMs as well as your speed. You will see that the RPMs actually drop when OD kicks in. The lower the RPM and the higher the speed, the more efficient the fuel consumption.
If an automatic car is in off overdrive does it save fuel
overdrive is used to save fuel economy at cruiseing speeds,for freeway or open roads.
its acruising gear on all fords whether manual or auto so you save gas and your tranny goes into a higher gear, less torque on tranny
If it has overdrive use it! it is a "highway gear" it will make no difference what so ever until you get up to speed then it will shift into overdrive and save you gas!
Safe but unnecessary. The trans will be constantly shifting in and out of overdrive in traffic and will put unnecessary wear on the transmission. Save it for the freeway.
Yes it should, its very important.
Overdrive engaged saves fuel.
TaleSpin - 1990 Save the Tiger - 1.30 was released on: USA: 7 November 1990
If your vehicle has an automatic transmission with overdrive, then at speeds above 45 mph, it should be in overdrive, which reduces engine RPM's to save fuel.
If its a light load, if it will be frequently used its worth getting a transmssion cooler to save the trannys life. Its also a good idea when towing to drive with the over drive turned off. Overdrive isn't meant to handle a load, just to freewheel to save gas on the highway. Towing a load with the overdrive on can burn out the overdrive.
you probably have a button or switch to turn overdrive on and off, it may be on the end of your shift lever, you probably want to keep the overdrive on, save you some gas, hope i helped
Gravedale High - 1990 Save Our School 1-10 was released on: USA: 1990
TaleSpin - 1990 Save the Tiger 1-30 was released on: USA: 7 November 1990
only way to save gas is to not drive
You use an overdrive when the engine is not straining ,i.e., the road is not going up but rather going down, or your car is not loaded with heavy weights like passengers or goods, and you want to save gasoline.
towing, now I carry alot of weight so if I'm driving under 60 mph or mountain terrain I turn overdrive off will save transmission repairs later
The cast of Race to Save the Planet - 1990 includes: Roy Scheider as Narrator Meryl Streep as Hostess
the overdrive is used to save gas. it is an additional gear after your final gear in the transmission. this gear usually kicks in at higher speeds (maybe 50+). you will notice the tach drop down about 500 rpm's as the vehicle kicks into overdrive. it does not make your car go faster or slower. you will not have be able to accelerate as fast in overdrive as you will in other gears. if it is an automatic overdrive then as you slow down the overdrive will automatically be taken off.
On my 4 cylinder I very rarely used 5th gear ( overdrive ) but on long trips on level ground it could save some gas. My 6 cylinder, on the other hand loved 5th gear.
Let a professional do this. You save very little by DIY.
The overdrive should be switched off when you want to avoid unneccessary shifting. If you are driving on a hilly road, the vehicle will shift out of overdrive going uphill to maintain speed while pulling the vehicles weight up the hill, and shift into overdrive going down the hill to save fuel when additional engine power is not needed. When towing with an automatic transmission, the vehicle may tend to repeatedly shift in and out of overdrive due to the added weight. In scenerios such as these, you should turn off the overdrive to avoid the unneccesary shifting which puts more wear and tear on the transmission.
The New Adventures of He-Man - 1990 Save Our City 1-56 was released on: USA: 1991
it depends on where you are driving. If you are just driving around town, you should probably turn the overdrive off, because it will cause the engine to run at very low revolutions per minute, which is not good for it. If you are driving on the freeway, then you should have the overdrive on, because it will save you fuel. However, if you are in hilly terrain, turn the overdrive off, so that the engine will be running fast enough to climb the hills without the vehicle slowing way down. Practice turning the overdrive off just before you start up a hill, and give the vehicle the gas to get its speed up before you get to the hill. This way, you can maintain freeway speeds. When you reach the top of the hill, turn the overdrive on again. Most transmissions today are set up to shift up as quickly as possible, even around town, to make them seem more fuel efficient. I have had a vehicle shift into overdrive at 20 miles per hour, but as soon as I gave it a little gas, it would shift down again, usually a couple of gears. Consistantly driving an engine at low RPM's results in carbon deposits in the engine, fouling of anti-pollution equipment, and poor gas milage. By turning the overdrive off in town, you can help to prevent these effects, and save yourself money on garage bills.