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Old 09-13-2017, 08:01 AM   #11
Alpine
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I syphon one gallon out of the reservoir every two years and replace it with this...

And my hydraulic system still purrs like a kitten!
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Old 09-13-2017, 08:33 AM   #12
bobbecky
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https://www.lci1.com/images/support/lipsheet/0291.pdf

And ATF is just hydraulic fluid with dye added along with other additives, and can be mixed with the original fluid. It is also recommended to siphon out the fluid from the tank and refill with fresh every few years.
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Old 09-13-2017, 09:01 AM   #13
JRTJH
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Don't forget the "popping" from hydraulic self leveling systems. The "fix" for that was to add "anti-stiction fluid" (which I believe is, for the most part, just a good grade of "quality hydraulic fluid") to the system.

I look at the hydraulics on my tractor, it's got three filters on the same hydraulic fluid, my truck has a filter on the hydraulics in the transmission, I look at the RV systems and there's no filter, just the same fluid being used "unconditioned" for years and years. It's remarkable that we don't have more "O-ring bits", metal shavings and more system failures than we do.

I don't have a hydraulic system on my trailer, everything is electric, but if I did, I'd be finding a means to add a filter to the system, probably on the input of the pump.
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Old 09-13-2017, 09:10 AM   #14
mach11961
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Where can you get the anti-stiction fluid
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Old 09-13-2017, 09:30 AM   #15
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Lippert lists the following:

ADDING ANTI-STICTION FLUID TO LCI HYDRAULIC SYSTEMS

If there is a popping noise in a Lippert Leveling system, Lippert has approved adding a quart of anti-stiction fluid. Approved fluids are listed by brand name and fluid characteristics below:
1. Torco RFF Grade 15 (Fig. 1)
2. Maxima Fork Oil Grade 15 (Fig. 2)
3. Caterpillar Hydraulic Oil Additive 1U-9891 (Fig. 3)
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Old 09-13-2017, 09:33 AM   #16
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https://www.lci1.com/images/support/lipsheet/0295.pdf
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Old 09-13-2017, 05:15 PM   #17
Ddubya
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Was at my dealer today and was told to drain a quart of fluid out and replace it with fork oil from a motorcycle shop. Supposed to improve performance and longevity.

Like JRTJH post.
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