The colour of the fluid in your car should be red, not brown. (Later astras use green mineral oil for the PAS). If it has discoloured, i would recommend replacing it as it obviously ain't been done for ages. The fluid you need to replace it is known as Dexron II, (ATF or auto geabox oil.)
Look in the manual.
For the TS Astra with hydraulic-electric power steering, it takes a Pentosin CHF fluid. A couple of equivalents I have come across include Castrol Hydraulic System Mineral Oil Plus, and Penrite LDAS fluid.
If your power steering fluid is dark brown it means that it has been contaminated. Metal or rubber has gotten into the fluid if it is dark brown or black. This can and will impact your vehicle's performance.
yellow, brown, red????
what is the problem with my power steering on astra automatic
power steering fluid is fluid that makes the power steering pump work and it goes in the power steering pump under the hood.
The power steering fluid recommended is Mopar
Remove the plug on the bottom of the power steering fluid pump. Drain the power steering fluid out. Replace the plug to the bottom of the power steering pump. Replace the power steering fluid.
Power steering fluidPower steering fluid
power steering fluid grade
Regular old power steering fluid.Regular old power steering fluid.
Red is the "normal" power steering fluid. If you can't get "power steering fluid," Dexron automatic transmission fluid is the same stuff. Clear is Honda power steering fluid.