Like the title says...I have this 15 year old floor jack (unknown make) and I used some John Deere hydro oil that I had laying around. Filled the jack through the fill plug and bled it. It works awesome now. I can raise it to max height and it holds. So my questions is: Was this the right oil to use in a floor jack?
Refilled a floor jack with JD Hydro oil
- Thread starter sven98
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Hydraulic jack ,hydraulic oil ? HMMM Though it may not be the proper oil it is close enough. I use any oil around the shop for my 30 year old floor jack . They are tough.
MolaKule
Staff member
Just about any mineral-oil based hydraulic oil of 6 to 10 cSt will work in a hydraulic floor jack.
In cold weather, ATF's will work in a pinch, althrough they do not have the level of AW additives of an AW hydraulic oil.
In cold weather, ATF's will work in a pinch, althrough they do not have the level of AW additives of an AW hydraulic oil.
Originally Posted By: MolaKule
Just about any mineral-oil based hydraulic oil of 6 to 10 cSt will work in a hydraulic floor jack.
I've never seen a hydraulic oil as light as 6-10 cSt in the temperatures of interest ... the ISO ratings are at 40C, and the lightest I NORMALLY see is 32, with 22 and 15 available on special order. Can you give an example of one you would use?
Originally Posted By: MolaKule
In cold weather, ATF's will work in a pinch, althrough they do not have the level of AW additives of an AW hydraulic oil.
I know that there were some ATFs, Mobil 1 in particular, that pass the Vickers and Denison wear tests. I used to recommend it in applications where start up was required in cold temperatures. It does not appear to be currently tested (or doesn't pass) based on the data I see on the web. Oh ... 36.3 cSt at 40C ...
Just about any mineral-oil based hydraulic oil of 6 to 10 cSt will work in a hydraulic floor jack.
I've never seen a hydraulic oil as light as 6-10 cSt in the temperatures of interest ... the ISO ratings are at 40C, and the lightest I NORMALLY see is 32, with 22 and 15 available on special order. Can you give an example of one you would use?
Originally Posted By: MolaKule
In cold weather, ATF's will work in a pinch, althrough they do not have the level of AW additives of an AW hydraulic oil.
I know that there were some ATFs, Mobil 1 in particular, that pass the Vickers and Denison wear tests. I used to recommend it in applications where start up was required in cold temperatures. It does not appear to be currently tested (or doesn't pass) based on the data I see on the web. Oh ... 36.3 cSt at 40C ...
the deere hygard low vis specs at;
40c 33
100c 7.2
all that with a -51c pour point
40c 33
100c 7.2
all that with a -51c pour point
MolaKule
Staff member
ISO 15 AW HO is about 4.5 cSt, ISO 32 is approx. 6 cSt.
The JD Hygard should work just fine. Coastal HO up to ISO 68 should work as well.
Quote:
that pass the Vickers and Denison wear tests.
Yes, but here we're talking about a simple hydraulic mechanism with seals possibly made in China or elsewhere of questionable materials.
I had a (Chinese made) jack fail one time because I used a synthetic hydraulic oil. Upon teardown, the seals had become degraded by the oil. Luckily I wasn't under the car at the time and was simply jacking it up to put floor jacks underneath after removing the hydraulic jack.
Be careful out there!
The JD Hygard should work just fine. Coastal HO up to ISO 68 should work as well.
Quote:
that pass the Vickers and Denison wear tests.
Yes, but here we're talking about a simple hydraulic mechanism with seals possibly made in China or elsewhere of questionable materials.
I had a (Chinese made) jack fail one time because I used a synthetic hydraulic oil. Upon teardown, the seals had become degraded by the oil. Luckily I wasn't under the car at the time and was simply jacking it up to put floor jacks underneath after removing the hydraulic jack.
Be careful out there!
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