Subject: Re: jacks (Jackall system)
I found the specification on the can:
HLP 46 has a viscosity of 46 mm2/s (=cSt = centistokes) at 40°C,
there is also HLP 22 and lower available.
When I now think about it, the V12 jacks retract quite slowly with HLP 46. I would try lower viscosity. If the system leaks a bit, then of course it will leak a bit more too.
You will find local suppliers for these oils, on the internet search "hydraulic oil hlp 46"
Have fun with the jacks, donīt creep under the car when using them !