I'm on my 2nd 10 spd auto shift, the company I work for, 9 of 11 company trucks are Macks with Eaton/Fuller 10 spd Autoshifts. The first one I had, 978,000 when we got rid of the truck, I was the only driver, clutch was replaced at 670,000 only because the clutch brake was totally gone, clutch still had 100,000 miles of use left on it.
The older 10 spd Autoshifts were essentially a manual controlled by the computer (which is not totally true since you still have the ability to manually shift them), the newer one's are not. My '09 Mack CXU, 10 spd Autoshift can not easily be converted, the old one could be done for about $300.00, this new one would require about $1,000 in parts.
As for mileage, compareable, my '09 Mack (MP8, DPF, 10 spd Autoshift, 3.70 gears, 445 hp) goverened # 67 mph, I can run Denver to Alb. and back, 940 miles rnd trip, average 6.9 mpg (7.8 empty, 6.5 loaded) and still have 30 to 40 gal. of diesel left in each tank afterwards (combined 234 gals. useable cap.). Recently drove a manual version of my truck (loaner from the dealer) for the same run, identical truck to mine except a manual, avg. 6.4 mpg rnd trip.
Manual Vs. Autoshift Transmission
Discussion in 'Experienced Truckers' Advice' started by drivenmecrazy, Nov 27, 2008.
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Big Duker and MackDaddyMark Thank this. -
All of our concrete mixers have 6 speed autos in em. We dont have any problems with them and they get beat to. They do have quirks though, sometimes it'll wind-er up to about 2500 rpm before itll shift, but I like it but all I do is city driving, and a couple 20, 30 miles trips here an there. Only thing I dont like is climbing hills, have to put it in manual sometimes to keep it from wanting to shift back up when I know it needs to hold the gear its in. Also the jake works great on the autos we have, ours drop two hears as soon as you let off the gas an keeps dropping hardly have to use the brakes.
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I have had most of the trannys out there even a super 10 the autoshift is a pain cause it does what it wants and the ultra shift is just like driving a car but they both have manual mode so you dont have to worry about the winter driving and it screwing you up. I still prefer the 13 or 18 manual but the ultra shift is great in stop and go traffic and easier on the body when you have lots of mountains to climb. basically it all boils down to preference to each his own. as for fuel millage depends on how good you are with a manual could go either way
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I just learned how to drive a 10 speed manual. I took my state test with a 10 speed manual. The company that im going to work for has the 10 speed auto's.. I like the 10 speed manual. I feel I would have more control of my rig in the hills. I herd that the autos have problems shifting up and down hills. I guess I wont know till next week about the autos, so my opinion dont count at this point. lol
kkburrr73 -
You mention quirks a few times. I recently purchased an autoshift. How do I go about learning these quirks?
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