Slide hydraulic reservoir

Look at the unit spec sheet. It should say automatic transmission fluid in most.
Make of the slide unit would help.

usnret wrote:
I need to top of the hydraulic reservoir on my Cardinal fifth wheel. Is ok to use hydraulic fluid from an auto parts store like Auto Zone?
Thanks in advance.
Jim

Thats what I use , I just bought a quart bottle of Johnsen's Hydraulic Jack Oil from O'reily's . I can see that mine is not ATF, it fairly clear. Been using Johnsen's in mine for several years.

Now if I would pull off one of the hydraulic hose that is leaking in the fitting ,and get the fitting replaced I probably wouldn't have to keep adding periodically :B My bad !!

ATF IS the standard fluid for hydraulic operated slides

Slides should be retracted when adding fluid to reservoir

Here is Lipperts recommendation.



Here is a link to the tech sheet.

https://www.lci1.com/assets/content/support/technical-information-sheets/Leveling%20and%20Stabilization/CCD_0002088.pdf
Note: Moderator edit to enlarge picture for readability.

You need to,look at the color of the fluid..

Not all were filled with transmission fluid..

If the fluid c9,or is honey brown then you need AW32 hydraulic fluid that you can get in an auto store or Wally World

If fluid is red then service with previous posters Lippert PDF.

Lippert says don’t mix fluid types

As long as it's down, why not top off with the stuff LCI recommends to fix the "popping" noises, even if you're not having them? Some sort of additive that's usually found at a Cat dealer. Sure can't hurt anything.

Later: I remembered that it's called "anti-stiction" fluid.

Lyle

Thanks to all for your advice and comments.