It is a mineral oil that you can only get from a VW dealer.
You can add hydraulic fluid to Porsche convertible top motor by popping open your engine hood and then pouring the hydraulic fluid into the appropriate compartment.
MB hydraulic fluid
To top up the hydraulic fluid in a VW MK 1 Golf, you need to locate the hydraulic fluid reservoir attached to the brake master cylinder. Unplug the electrical fluid sensor and Fill the reservoir to the ÒMaxÓ mark.
Remove the fill plug and top it off with hydraulic oil.
Well I today anwsered my own question all it needed was hydraulic fluid. In the back of the convertible there should be a black rubber plug all you do is get any type of hydraulic fluid( make sure the hydraulic fluid in the back says mixs with any hdraulic fluid) you pour it in the cylinder shape in were you took out rubber plug make sure it over flows and plug it back in and your done your top should now go up way faster, smother,and nice.
On top of the differential there is a removable 3/4 " cap on either side of the seat. Hydraulic fluid can be put into either.
can i use power steering fluid in a top motor pump
Dipstick on transmission top-right
power steering fluid
all of the components for the top, including a plug in the side of the motor to fill with fluid from are under the back seat area. Refill for fluid is dex trans fluid.
After releasing the pressure by turning the bolt on the side of the pump, use a 5mm hex wrench to undo the bolt on the top of the pump. It is the only bolt that is silver and does not have wires attached to it. The fluid goes into that hole, using a syringe and/or tubing.
under the plastic cover, under the spare wheel in the boot