Your 2014 Vista has LCI Electronic Jacks. You'll find details in section 10-6 thru 10-8 of your Operator's Manual.
If your jacks are slipping a little then it's not your fluid level. It's likely a tiny leak in your jacks - or maybe it's normal??? I don't know if it's all that unusual. My jacks usually settle a few millimeters after a day or two and have done so since the RV was new.
Sometimes when we are setup and the temperature cools overnight the jacks will shudder or drop with a small bang sometimes. This is caused by the changing temp. The first time it will scare you to death but you'll learn what it is soon enough. It's caused by "stiction" and they do make a fluid that reduces this but you have to remove all the old fluid and add the new. So, we haven't done it.
You should only add fluid when the jacks are fully retracted. And, when they are and you inspect the reservoir the fluid should be up near the very top of the tank... about 1/4" or so below the top.
You'll know when the fluid level is low... the jacks down alarm will go off with every turn or upon braking.
Do not ever add fluid when the jacks are deployed. Because when you retract the jacks it will force fluid out of the reservoir and on to everything.
A good practice is to extend the jacks, wipe down the exposed cylinders with a WD-40 rag.
Also, each jack has a grease zerk at the top portion of the jack. I make sure that my service shop greases those jacks with every oil change.
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2017 Winnebago Adventurer 37F
2016 Lincoln MKX Toad
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