Yes you can back and fourth between them without any issues. Depending upon your vehicle, I'm guessing the "D" is the Overdrive gear, which I recommend only when your cruising at speeds over 50MPH...notice how the RPM drops when you shift it from D3, to "D". It allows you to have a fourth gear. Then under that speed, I recommend "D3" for regular streets and traffic. The overdrive gear helps with fuel economy at the higher speeds.
Read your car's manual as to what the manufacturer recommends. I've seen many people have transmission failure because they leave it on "Overdrive" constantly and only. What occurs is the transmission shifting much more often, un-necessarily. Or their frustration when the car doesn't have much "oomph" during city driving, because the transmission on over-drive is programmed to shift very early as well.
Hope this helps :-)
2007-03-18 05:01:48
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answer #1
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answered by A A 3
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Yes you can, it will only shift your trans into 3rd gear. You won't want to go much lower than D3 if you are travelling at higher speeds, but it won't hurt anything to do from D to D3.
2007-03-18 08:23:32
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answer #2
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answered by Moose 4
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At a high speed, no you can't. You will damage the gears inside the transmission. It's not a manual so don't try it.
2007-03-18 08:52:14
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answer #3
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answered by Thao Y 3
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yes you can just dont travel at high speed when you shift
2007-03-18 10:20:02
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answer #4
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answered by scubadj 1
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