Trolley jack leaking oil

zuihoujueding · Post by **zuihoujueding** » Wed Jun 10, 2009 9:37 am

Hey, my trolley jack is leaking oil at the hydraulic shalf and wonder how can i remedy it?

If the oil needs to be replaced, what kind of do you recommend and how to replace it?

Post by **Bennoz** » Wed Jun 10, 2009 9:54 am

Its supposedly a science in itself. Most likely the main seal has gone / or is going. Mine has been leaking like that for years, I never bothered to fix it, just keep topping up the oil. You are supposed to use a proper hydraulic oil like Shell's Tellus, but I just use regular engine oil, works just as well

zuihoujueding · Post by **zuihoujueding** » Wed Jun 10, 2009 10:05 am

Ahhh, i got myself an $80 jack. The prolift brand (Orange color) from Repco. Bought it cos its orange and it works. Use it for nearly 1year and thought this kind stuff can last for years.
Cant get underside of my ride at the meantime as the jack is dropping slowly which obviously leaking and cannot hold the weight.
engine oil? u sure?

col2560 · Post by **col2560** » Wed Jun 10, 2009 10:33 am

engine oil works fine. maybe a thicker oil won't leak past the seal?? have a look and see if you can tighten a ring that is around the seal. don't forget to use jack stands every time you got the car up off the ground !!!!!

DaveO · Post by **DaveO** » Thu Jun 11, 2009 9:05 am

you shouldn't be cralling under your car with only a jack holding it up any how. go and get some stands.

zuihoujueding · Post by **zuihoujueding** » Thu Jun 11, 2009 10:21 am

i know. i use the stands. but have to admit that i dont use them all the time. I even got a brand new pairs in a box. Whoever needs them can buy them from me.
The problem is that the jack is unable to hold the pressure right now and i want to fix it.

WIll gte some oils and fix it this weekend! thanks guys!