I've got the hydraulic ramp jack, not sure of age but several years old, for our cobra trailer that seems to be suffering the common issues of leaking and not raising fully and then slowly lowering... I searched several of the old threads and looked at Cobra's site where they have info on replenishing the fluid. I'm hoping doing so will solve the problem, otherwise on to bigger and more expensive fixes.
Cobra recommends HLP 32 ISO or equivalent fluid. I don't know all the nuances of hydraulic fluids, but I remember seeing a post about a certain type to avoid and I can't find that post again..
I can pick up a bottle of this locally:
http://www.tractorsupply.com/tsc/pro...t?cm_vc=-10005
And here's the data sheet on it:
http://www.smittysinc.net/images/pro...c_Jack_Oil.pdf

Any issues with using this stuff?
Thanks