From a Power Gear Hydraulics Leveling gear manual:
RECOMMENDED HYDRAULIC FLUIDS FOR YOUR POWER GEAR LEVELING SYSTEM
The fluids listed here are acceptable to use in your pump assembly. Contact coach manufacturer or selling dealer for information about what specific fluid was installed in your system. Please consult factory before using any other fluids.
In most applications,
• Type A automatic transmission fluid (ATF, Dexron III, etc.,) will work satisfactorily.
• Mercon V is also recommended as an alternative fluid for Power Gear leveling systems
operating in environments with large temperature swings Operating in cold temperatures (less than -10° F) may cause the jacks may extend and retract slowly. For cold weather operation, fluid specially-formulated for low temperatures may be desirable,
• Mobil DTE 11M, Texaco Rando HDZ-15HVI, Kendall Hyden Glacial Blu, or any Mil. Spec. H5606 hydraulic fluids are recommended for cold weather operation.
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Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
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