Originally Posted by trea
Not being an automatic owner but knowing a little about alot. My under standing is when towing you should have the overdrive off, even when not towing if in town it should also be off. One thing that is of help with folks that have automatics, a transmition temp guage is highly recomended. The last thing you would want to do is over heat your trans.
Larry and Nicole
Hi, no you don't want to overheat anything. As for the overdrive missconceptions; I explain it this way. Your transmission knows when to shift and how to shift. For the most part you don't need to do anything. People say, "turn off the overdrive when going slow" well if you are going slow enough, it will not shift into overdrive. So why turn it off? If you are towing and going up a long steep grade, you may want to turn off the overdrive and / or manually downshift to hold a good steady speed and engine RPM. Now going down the other side of this grade, you should do the same thing. turn off the overdrive and or Manually down shift to let the engine help slow you down and save your brakes. [another frequently overheated item.]
Overdrive Test: Set your cruise control at 65mph and let it go. It will downshift if necessary to climb that hill and up shift when done climbing. And you can manually downshift while going down hill to save your brakes.