[intrcptrbird]

its just when you keep it in OD it shifts A LOT more and causes the trans to get A LOT hotter thus causing parts in the trans to wear out faster. My uncle never puts his work trucks in OD around town and has been able to keep a transmission in good shape for 200,000+ miles. The RPM's are a bit higher without the OD on but if you just leave it off around town then the RPM's never really get up high enough to were it would cause a problem. obviously you get a little worse milage but really the difference ist that great. I know if I was leaving my car in OD around town then I would be on my second trans already.