Diesel Bombers - Overdrive on or off

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es772

08-09-2012 08:13 PM

Overdrive on or off

So this is probably a dumb question but should I drive with overdrive on or off. I have a 98 24v Cummins

H.R.D

08-09-2012 08:58 PM

Depends on the terrain your driving in. Nice and flat leave it on. Real hilly turn it off. Also If you tow and want to keep your rpms up, turn it off.

lobsterman04

08-10-2012 12:29 PM

If you have 3.54 gears turn the od off untill going over 45. if you have 4.10s(like me) leave the od off till you're doing 35-40ish. It's better for the TQ and keeps the fliud flowing at optimum. Thus more going through the trans cooler. All this equals longer life. All this is from Dan at Masta Performance Transmissions.

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