The most likely answer is the Parking Brake is set.
Yes. Normal brake fluid is actually synthetic
brake fluid or diesel
normal brake fluid
Any DOT 4 brake fluid. OEM specs.
No, and neither has anything to do with the engine type.
Just normal DOT3 brake fluid.
The red brake warning light is an indication of low fluid, a loss of pressure, or the parking brake being set.The red brake light stays on when the parking brake is set, the fluid is low, or there us a loss of pressure.
read the owners manual
Normal spinal fluid pressure is 12
The brake fluid level gradually goes down as the brake pads , brake shoes wear
Astras usually share brake fluid with the clutch fluid resiviour
To top off the brake fluid on the Renault Kangaroo diesel, you will need to open the brake fluid reservoir. This is located on the passenger side of the motor nearest the firewall. Open the reservoir and add fluid.