Thread: O/D on or off??
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Old 12-01-2010, 09:20 AM
qsil315 qsil315 is offline
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Originally Posted by nanney1 View Post
O.K. a couple of questions about the O/D off. At what speeds are we talking about where it would help?

I do a good bit of driving on rural roads where the speed limit is 45 mph. Would this be an application for O/D off? Ocassionally, the limit will drop to 35 and sometimes go up to 55. I don't do any stop and go city driving.

At what point is it better to run with O/D on? 55 mph, 60, 65????

Also, should you be at a complete stop to switch from O/D on to O/D off? I know it can be done on the fly, but is it harmful for the tranny to be driving with O/D off at 55 mph and switch to O/D as I approach highway cruising speeds. Or vice versa... I go from 65 mph down to a 45 mph zone and switch to O/D off.
dude all you have to do is look at your tach to answer your question. drive for a bit with od off and a bit with od on. the lower your rpms stay, the better mileage youre getting if your going the same speed. its pretty simple math bro, dont make it rocket science.
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