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After only 25 years of service, my Sears floor jack developed a leak and my local parts store only has hydraulic fluid in 5 gallon pails. Can I use something else like ATF or brake fluid?
 

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I have a log splitter and a front loader/back hoe. For these, I have purchase Hydraulic fluid at Home Depot, Kobota dealer, and Auto Parts stores in 1 and 5 gallon jugs/pails. Might want to look in the local yellow pages under hydraulics or tractors, then call around.
 

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Mike,

I was working with my 25 year old craftsman 2 ton jack 2 years ago and it had slowly worked worse and worse. I determined that the fluid was low. I have no hydrolic fluid and being basically too lazy and cheap to go find some, I put in what was in the garage. Used brake fluid. Anyone with a racecar has lots of used brake fluid. It's worked fine for the last 2 years.
 

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Get a new jack. If an exterior seal is leaking, the interior seals are not far behind. A good jack is so cheap, there's no reason to keep rebuilding the old one. Unless it's one of those really big expensive ones.
 

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ATF will work, thats what is used in most hydraulic systems such as plows, dump hoists etc.

For the $$ you can probably get a new much better jack for $75.
 

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I think my local parts store has little bottles for a few bucks. I agree with others, though. If it's leaking very fast at all, start shopping for a new one.
 

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I have a 25 year old sears jack that has probably slowly leaked for 10 years now. It just needs a few ounces every year or so. I found a one quart bottle of jack oil at my local parts store years ago. You might also try Wally World.
 

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Don - that was funny....
Actually they could have pee'd in it and it would have probably worked. Hydraulics aren't really that finicky unless they are subject to extremely high pressures or temperature variations. FWIW - I've used brake fluid on occassion and it works well..
 

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Well, before we "Ran from Iran" a number of years ago the locals used to like to substitute water in helicopter drives. Didn't work too well tho. Scott
 
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