Not a motorhome, but on our 5er they recommended with all jacks & slides (if hydraulic) retracted then remove 1qt of the fluid from the reservoir & replace/top off with 1qt of 15w motorcycle fork oil & then cycle slides/jacks 2-3 times to mix in the new oil & work any air out. Worked on mine, no more popping/creaking.
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Fulltimed 10+ years
Sold '13 Thor Redwood 36 FB
Traded '13 GMC Denali DRW D/A
Replacement undetermined
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