I’ve done it both ways ok with my dump and equipment trailers (each about 2500lbs empty), to move them around on level ground for maintenance and such. Being able to stop is as much a consideration as anything, especially heading downhill.
For me it comes down to covering my (spaced) R4 tracks and making sure I can at least have the option to head downhill, if needed—and there are plenty of hills, rocks, and clay to contend with here.
Here’s the relevant page from the BH77 WSM, if it helps. I would think whatever fluid is sitting in your cylinders right now far and away exceeds whatever you might get from messing with that valve stack.
Never meant to imply any negligence whatsoever. Just quickly reminded me of a time in my life I’d like forget 😉😁.
And I forgot to mention my escort had been there 38 years.