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Pouring into Hydraulic Jack: Choosing between Hydraulic Fluid & Lux Oil for Aluminum Housing

robokop 112556 19
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What fluid should be poured into an old Polish hydraulic jack with an aluminum housing?

Use low-viscosity hydraulic oil, and ATF also works well in these jacks [#5973249][#5973036][#18741309] Regular oil can thicken in low temperatures and make the valves stick, so it is less suitable for cold use [#5973407] Brake fluid is not recommended, because it can pull in water and rust the pistons [#18740252] One user also reported good results with HL-46 or HP/HL-32 oil in refurbished aluminum jacks, with no lifting problems down to about -5°C [#21751894]
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  • #1 5972783
    robokop
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    As in the title, what were the flooded Polish hydraulic jacks, those with an aluminum housing? In my opinion, opinions are divided between the hydraulic (brake) fluid and the "Lux" oil. What's your opinion?
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  • #2 5973007
    Qbuś
    Level 38  
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    I have three, they all run on oil :D
  • #3 5973036
    Banasiewicz02
    Level 31  
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    I poured the automatic transmission fluid and the jack was smart.
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  • #4 5973249
    djandriu
    Level 27  
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    Hydraulic oil available at gas stations and auto stores.
  • #5 5973407
    niutat
    Level 36  
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    I recommend hydraulic as well, regular oil will thicken at low temperatures and valves can get stuck.
  • #6 5974806
    goldwinger
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    My years on oil and a lot of it "takes" because the gasket ... is broken
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  • #7 5974994
    robokop
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    Okay, poured Dot4 fluid, let's see. The old SKR spike stated that they were originally flooded with DEA-1 (?), Because the oil thickened too much in the cold.
  • #8 5975068
    radek310
    Level 15  
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    Just like Banasiewicz02, my father and I poured Gear oil. The jack flickered at the lowest temperature down to -10C, in larger ones it has not been tested, because who thinks about changing the wheels to -20C. Greetings
  • #9 5975090
    goldwinger
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    I don't think mine has ever seen a frost
  • #10 5975126
    robokop
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    radek310 wrote:
    [. The jack flickered at the lowest temperature down to -10C, in larger ones it has not been tested, because who thinks about changing the wheels to -20C. Greetings


    Heheh, recently I had to, - 22 degrees, the borrowed jack only after heating started to respond to pumping.
  • #11 5980869
    romoo
    User under supervision  
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    For hydraulic systems, the hydraulic oil is ATP, no dot3.
    robokop - if your signature was real, within a week there would be no more cats in the world !!!
  • #12 5980999
    ZGG
    Level 27  
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    Don't confuse hydraulic oil with hydrolyze. Because the latter is in spirit. And not on something greasy and slippery.
  • #13 5981381
    DJ Max
    Level 30  
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    It can pour LHM, you will be sure of high quality and reliability ... And if it is to be cheap, oil used for helicopters ;)
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  • #14 18740180
    wioskomaniak
    Level 7  
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    I didn't have anything at hand, that's why I flooded the old jack with brake fluid. I lifted it up without any problems, but unfortunately it does not want to fall down in any way.
    I am asking for tips, what else can you come up with?
  • #15 18740211
    ^ToM^
    Level 42  
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    We use hydraulic paraffin oil such as:

    Pouring into Hydraulic Jack: Choosing between Hydraulic Fluid & Lux Oil for Aluminum HousingHydraulic..ck.png (209.7 kB)You must be logged in to download this attachment.

    It is available for purchase at a price of about PLN 30 per liter.
  • #16 18740252
    robokop
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    ^ToM^ wrote:
    We use hydraulic paraffin oil such as:
    In fact, there could be anything there. For lack of something better at hand, I even poured the Z-HM into the "frog", which remained after the repair of the folding roof. Boxol, ATF are very well suited - those with low viscosity, used in power hydraulics. I do not recommend brake fluids - the rust eats the pistons, because they pull water.
  • #17 18741309
    quaczuq
    Level 16  
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    I also recommend ATF, after venting it, it not only lifts the car better, but also lowers it smoothly. Before the operation, he did not have the strength to lift to the end of the range.
  • #18 21751454
    LEDówki
    Level 43  
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    How do you vent such a lift?
  • #19 21751468
    sanfran
    Network and Internet specialist  
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    Simple. There is an oil entry to the lifter piston from underneath. That is, you lift, turn "upside down", unscrew the valve and lower the jack. Sometimes you can hear the air escaping.
    Air-logged lifters are nasty because they spring.

    By the way, you have the "golden shovel" award for digging up an old topic!
  • #20 21751894
    sandokan7
    Level 19  
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    I, after reconditioning such aluminium lifts, flood with HL-46 or HP/HL-32 oil and there have been no problems with lifting even at temperatures down to -5 degrees C.
    Bleeding = after flooding with oil, it is usually sufficient to inflate the system 2 or 3 times to maximum extension and lower.
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Topic summary

✨ The discussion revolves around the appropriate fluid to use in Polish hydraulic jacks with aluminum housing, particularly debating between hydraulic fluid and "Lux" oil. Participants share their experiences, noting that hydraulic oil is generally recommended due to its performance in low temperatures, while some have successfully used automatic transmission fluid (ATF) and gear oil. Concerns are raised about using brake fluid, which can cause rust and operational issues. The consensus leans towards using specialized hydraulic oils available at gas stations and auto stores, with caution advised against using brake fluids due to their corrosive properties.
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