OD or not to OD

I have a 2003 Dodge Durango..Was wondering if it's ok to leave OD on all the time or not.

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Yes, and that's by design. With OD off your fuel economy will suffer greatly.
About the only time I think I might consider turning OD off would be if I was towing something over hilly or mountainous terrain.
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I agree. Thats the way they make them to run. I never turn mine off unless pulling.
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"RamMan" wrote:

How did we survive for many years without OD??? In a big SUV it will not make that much difference, maybe a few MPG at most and if it has taller ratios to begine with and oversized rubber, MPG will likely improve.
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I pretty much follow the owner's manual on that one.. I seem to remember that it recommended locking out OD if you were in a lot of traffic and staying under 30 mpg.. locking OD out stops a lot of hunting... shifting down every time that you hit the gas, then back up as soon as you lift your foot at all..
I also lock out od on mountain roads where you're not going to be going over about 40.. it feels like I have a bit more control, (like down shifting a stick), and prevents it from shifting up as you take your foot off the accelerator going into a turn.. YMMV
mac
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"Gene" wrote:

It will not hurt a thing and it not really a bad idea around town or towing as they will be less hunting through gears. On a flat hiway cruise with no load you might lose a few MPG but there is a lot of other varibles that determine how big the loss is if at all in some cases.
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Gene wrote:

No problem, unless you are going up or down a long hill or mountain.
JAM
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