David Haag

is it ok to keep your automatic in drive rather than o/d while driving slow. i hate when it shifts to o/d at 42 mph. of course i always shift to o/d when i get on the highway or if i am going faster. is this bad for the tranny?

StealDads67

Nope not at all... well...it shouldnt, lets put it that way

vader86

No, thas what i do, i shift up at 45-47 if i'll be staying at that speed for awhile. Otherwise i keep it in D.

scorp508

It is fine. Also it will keep the tranny from hunting around all 4 gears and only give it 3 choices. :)

Vic'89

I always keep my Tranny in "D", unless I am on the parkway.

Vic

Drewdog

I'm always in D

Raysur

I'm in D too unless i'm on an open freeway.

KYVette90

I shift into OD if I'm going to be at a sustained speed above 45 or 50.

BBA

It's better for the tranny to keep it out of OD.

The mechanics behind this is in third gear, all gear elements are 'locked' so that the engine rotation is directly coupled to the driveshaft. Minimal wear occurs when in third gear due to no gear mesh movement.

Does it hurt economy? Yes, slightly, but what the heck...you bought a Corvette, not a 4 banger mileage mizer. :D

Lone Ranger

Same here except w/ my 2.59 axle I wait until about 60 before pushing up one notch into OD :D

0ski_dwn_it

When on mine I can hit ~120mph and still be in drive with room to spare. You are fine.

MagRed_04

Me too! "D" unless on the thruway.

JK

DON M

I do this in all of my vehicles. I think it is easier on the trans than all of that back and forth shifting at low pressure levels. The car certainly feels better. I think GM set the shift point to low to get better CAFE scores.
I don't shift up until it is 55-60 and steady.