Hi everyone, I own a 2014 Daihatsu Copen Robe. Initially, the car’s roof operates smoothly when I start it after a cold start. However, after driving or opening the roof again, it becomes significantly slower. I’m considering replacing the hydraulic pump fluid with Zh-M hydraulic fluid from FEBI. Could someone please guide me through the process of changing the fluid? I understand the pump’s operation, but it’s horizontally mounted, and I can’t seem to find a drain plug in the reservoir. Additionally, I’ve lubricated the hinges with WD-40 Silicone Lubricant. Is there anything else I should check to speed up the roof mechanism and prevent potential failure in the future?
