Flat towing questions

[Muddy Bean]

As some of you know, myself and others here have successfully been flat towing our 100's behind our coaches. I have a total of well over 40,000 miles of flat towing behind my tour bus without any issues at all. My family is growing and my specific needs are changing, so an AWD Sienna is on the short list for my wife and I. I know the cruiser with its transfer case is a different beast than an AWD Sienna, but does anyone know the specific mechanics that need to be addressed to possibly flat tow an AWD Sienna? I know transmission lube pump would need to be installed, and Remco does make one. Blue OX does make a towing base plate for the Sienna but I do think this all applies to the FWD vans. What specifically in the drivetrain needs to be dealt with in an AWD Sienna van to keep it lubed and happy during a trans neutral flat tow? I'm more than willing to spend some $$ to make this work. Here's my current setup which has been great for many years:

 

[Julian Stead]

Isn't that a question for a Sienna forum, if they even exist.

 

[Julian Stead]

Found it Toyota Sienna Forum

 

[Muddy Bean]

Thank you for being so helpful, I'm asking here because in my membership on this form, I have found that there's a lot of guys with a lot of knowledge about different Toyota drivetrains. So I'm seeking a broader knowledge base. The sienna chat forum in my opinion does not have quite the mechanical depth of knowledge as our forum. But thanks for the free bump.