Winnebago Solei User Manual page 127

Hydraulic Fluid Recommendation
The leveling system is filled from the factory
with AW-22S synthetic hydraulic oil that has
been specially formulated for use in the leveling
system and that is compatible with Automatic
Transmission Fluid (ATF).
DO NOT USE brake fluid or hydraulic jack
oil, which can damage the seals and cause leaks.
Further Information
For replacement fluids, see the manufacturer's
recommendation in the leveling system operation
manual provided in your InfoCase.
SLIDEOUT ROOMS AND LEVELING
SECTION 10 –
10-13