Roadranger "Do Not Change Range While Moving In Reverse"

I always wondered why that sticker was there.

Is it just too big a jump or do the synchronizers not work correctly in the opposite direction or something?

I have done a lot of high range backing but not going to say any more about the title of this post to protect the innocent/guilty parties.

The transmissions never failed and the trucks have since been sold on down the road.

Roadranger "Do Not Change Range While Moving In Reverse"