2011 F100
I have other requirements in a truck that that I'd pay a lot of money for that also preclude the automatic: I like to be able to pop start my vehicles if I need to, I try to minimize the number of assemblies in a vehicle that I can't work on the internals of myself, when plowing I can put the clutch in and rev the engine to get more hydraulic flow, and aside from heavy truck automatics I have yet to encounter an automatic light truck that's really been worked hard and not been through one, if not two or three replacement transmissions (which calls into question the higher towing capacities). This I agree is changing - Ford is much better at making things now than they were 20 years ago and yes, I know that some of the newer manuals require some fancy tools to preload when reassembling (but they can be improvised).
I'm not saying everyone should adopt my preferences, but I strongly disagree with anyone claiming that an automatic is better for truck use in the general case.
As far as the hydraulic flow, put the truck in neutral and rev it up. And as far as your comment about not being able to work in it yourself, it looks like it is time to learn a new skill should you ever need to tear down an automatic tranny. They are not rocket science to work on.
Hate to say it but this statement is inaccurate. Pure and simple, even the new autos drop mileage by around 10%. I have been watching this closely for the past year or two. I prefer the manual, partly due to the control it gives but also due to the several thousand in savings upon inital purchase and the difference in fuel mileage. Look up the threads on the manual trans in the 6.4 forum. The general consensus by people who drive them is that there is a significant mileage difference. Of course there are people in the same threads who claim there is no difference (Not pointing any fingers at you Ken) but generally they have no basis for their claim. Most of these claims are rooted back to a salesmen who don't want to stock anything but the most popular options. Kind of like getting a simple low option truck. Afterall, your local salesman would not lie to you to get you into a vehicle right now........
Not trying to start an argument, just writing what my research / careful observation over the past several years has shown.
2008 F150, 4.2L:
manual: 14 city, 20 highway
highway: 14 city, 19 highway
Unfortunately, the EPA site doesn't show the axle ratios for each, and that can account for the difference based on overall final drive ratio.
1. The manual for the 6.4 has 6 ratios, the automatic has 5.
2. The is a big difference in the drive ratios of each
3. Because many people who buy the manuals do so because they cost less, they are likely to be the type of driver more inclined to go easier on the pedal. I'll bet the same driver with the same driving habits is going to see similar mileage on an automatic.
4. I'm willing to bet there was no hard data in those discussions breaking things down overal by base curb weight, use, and axle ratio. I think if folks did that they'd see the trend has a lot more to do with those factors than anything else.
. I said the mileage disadvantages of the past are gone. Instead of a 10-20% difference, its well under 5% and in many cases there's no difference at all. On the highway, with the torque converter locked, there should be no difference if axle ratio, gear ratio and vehicle configuration are the same because in both cases you have a direct drive. Considering the accelleration and towing advantages the automatic has, I'll take the 1 mpg loss.
For me the economic issue is a benifit not a requirement. I would love to get my hands on a King Ranch with a stick. I will be buying a new F-450 (most likely) in around 2 years. Unfortunately, I cannot get the interior I want with the gear box I want. There are many out there who want and can afford the the options and still want a stick. It is impossible to walk on to a lot and find that. I believe this is due mostly to the dealerships not wanting to stock 2 full lines. Many salesmen will flat out tell you that "I can sell a auto to a stick customer but not a stick to an auto customer" Following this logic the salesmen are going to do their best to force everyone into their box.
Most of the information on fuel mileage that I have has come from this web site. I have been watching what people are reporting on the 6.4 forum very closely. There is a difference. Rarely (I cannot think of a single time, although I am sure there is) do you hear about manuals getting 10 or 12 MPG, yet that is common for the autos.
I have talked to several salesmen about a new truck over the last year or so and all of them have tried to talk me out of the stick. They all try to say that the mileage is the same. Of course one of them was telling me that the F-450 4WD, with 4.88's was going to get 18 mpg. I have not been back to that dealer since. I have only found one dealer in my area that has generally honest salesmen. While shoping for the Sport trac that I recently purchased I was at probably better than 10 dealers to find what I wanted. I almost didn't buy a loaded, Sport trac Limited due to only being avalable in an auto. Again this goes to show that cost is not THE driving factor.
As to the torque converter locking up, yes that is great. I am not sure but I believe that only happens at freeway speed. (could be wrong here on the new trucks) This means it doesn't apply the rest of the time. Additionally, even when locked up, there is significantly more mass in metal and oil in an auto. When I used to race dirt track the common calculation for what that rotating mass was worth was 1 lb of rotating mass was worth around 10 lbs static weight. Think about this, if you add 40 lbs rotating mass (I think this is conservative) you are adding the equivelent of 400 lbs to the bed of the truck. Also on this would be all the fluid being slung around, that has mass to consider.
Lastly, this kind of sums it all up for me, heat. Manual trans do not need a cooler. Autos do. Pure and simple physics. All the heat leaving the cooler in the front of the truck was generated by the engine. The engines are around 1/3 efficent at convering avalable energy to rotation. Take all the heat you vent from that auto, multiply it by 3 and you get the amount of fuel that auto cost you on a trip.
As long as autos need coolers they are wasting energy that would be normally transfered to the drive wheels. Very simple.
A torque converter has a torque advantage over a manual, especially when starting up with a load. Its why the automatics have higher tow ratings.
Depending on PCM code, the torque converter can lock in 2nd gear and higher, at city speeds. Its actually capable of locking in all gears but with programs I've made for the 6.0L the ride quality is not optimal with a 1st gear lockup.
Yes, the automatics generate heat. But that's not the entire picture. Manuals have fluid as well, and its a lot thicker, so there is loss there as well. An automatic isn't really going to generate much heat once locked up (I have plenty of datalogs to back this up). Its only when its unlocked that it generates heat. Yes, there is some power loss, but with a heavy truck it adds torque so you end up with lower engine load (if you watch data logs you'll see that load is one of the biggest factors in fuel economy).
The torque converter in the F150 is extremely efficient (for an OEM unit), with a stall speed around 1800 rpm. Not only does it do a great job of torque multiplication when its needed at heavier throttle, it also does a very good job at light throttle. The light throttle difference in RPM between lockup and non-lockup varies from as little as 50 rpm to 200 RPM at most.
Considering the fleet mileage standards the automakers have to comply with, and the upcoming 2011 standards, I don't think they'd drop the manual as an F150 option if it was going to make that big of a difference in mileage.
Plus... there is a huge factor that is being overlooked. The drive by wire throttle controls, and variable cam technology gets a lot of power and economy by precisely managing throttle plate position (which does not follow throttle peddle action), cam position and transmission control. It knows when shifts will occur, correlates this with peddle position, anticipated driver demand, acceleration rate, RPM, etc. to control the throttle plate and cam. Efficiencies with the F150 automatics are gained here not directly due to the automatic, but indirectly because the computer is controlling the transmission and can control other variables in relation to it. Without knowing when the shift is going to occur, a lot of cam and throttle calculations go out the window.
Starting with 2008 model years EPA ratings have changed to more accurately reflect current real world driving conditions. See the video here: 2008 Fuel Economy Tests
Ford Trucks for Ford Truck Enthusiasts
Ford did very well borrowing the "Ranger" name from the F-series and applying it to the smaller trucks. It was a recognizable brand name and they leveraged that to their advantage even though the Ranger had nothing in common with the F-series. This truck would share a lot more with the F150 than the Ranger did with the F100/F150 when it came out.








