Stuntman with a couple of questions

Hello all. I am a stuntman in the tv/film industry. I hold a Class A CDL and at 1 time before getting into stunts, I drove for a living for about 4 years. Obviously I'm not in trucks every day and just have a quick question or two.

I have an upcoming stunt, very simple, but I just want to gather as much info as possible before hand as I don't really receive a lot of info prior to the day of work, nor do I get much time to familiarize myself with the truck.

Question is, on trucks with the ability to split gears, if I'm running empty do I still need to split each gear or can I run through the gears normally without splitting gears?

Also I attached pictures of the truck. A Kenworth. Based on the picture (sorry for the poor quality) any idea what transmission will be in there?

 

Thanks for the quick replies. Appreciate it.

 

No insult taken, I appreciate you asking. Splitter is the button on the side that allows me to go to say 5 lo to 5 hi by taking my foot off the gas pedal correct? That is basically what I am asking, if running empty, can I skip this process.

 

Great thank you.