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  #1  
Old 12-14-2003, 01:36 PM
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Join Date: Oct 2002
Location: Toronto, Canada
Posts: 700
Kestas you are right on the money

Economy gauge tells you how much fuel is going into the engine based on the current revs. Downshifting to get it to a lower reading won't do anything to fuel economy other the change the gauge reading. You will still be burning the same amount, just in a different gear.

Don't fool yourself, on regular roads leave it in D, but the other gears have been put there to help with some road conditions the tranny can not predict.

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  #2  
Old 12-14-2003, 03:40 PM
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You will rue this day...
 
Join Date: May 2003
Location: NW Arkansas
Posts: 732
If I dont manually shift mine while the tranny is cold (read first 15mi), it will flare slightly (300rpm) from 1st to 2nd and about 1500rpm from 2nd to 3rd.

I think I am helping my tranny.
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  #3  
Old 03-10-2004, 01:16 AM
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Join Date: Sep 2003
Location: Kentucky
Posts: 19
Talking

I always leave my 300TD in 'S' for the first mile or two after leaving home in the morning. Sometimes while driving around town I'll leave it in 'S' as well. You can reach for that turbo a little easier when you need it. On the highway always in D. The transmission when warm shifts smoothly when using light to moderate throttle and sharply with an insistent request. The diesel is a little more demanding on the tranny though. Car's got way over 300K on the odometer.

I live in Eastern Kentucky and we have plenty of curvy, sloped roads to test the shift points in any automatic transmission. I would shift it down if I knew that a stretch of road requiring a little more control was ahead, maybe more so on wet pavement.

My 89 300TE does not seem to require the kind of finesse with the shifter as the TD does at times. The TE seems to provide sufficient engine braking to assist a light touch on the brake and willing to downshift with a quick (yet brief) stab to the throttle.

Bottom line IMHO shift it if you NEED to shift it. I don't think it hurts the drivetrain at all. If it were a FORD, (and I've had a few) I would definitely think twice before demanding the limits of the engineering.

Use it, don't abuse it.
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