Hello everyone, I own a 2007 Pontiac G6 GT convertible. I have own the car for like 6 months and it's my first car. As a 18 year old, I require help with the situation I'm having. I do not have the knowledge of the history of the car or how many owners it passed down to during the 15 years of it's survival. I tried my best to show y'all the inside of the hydraulic reservoir. I have never put the car in convertible mode bc I'm missing the trunk cargo cover. But that's besides the point. I take a look at the hydraulic reservoir and I see it's empty. Within the reservoir, I see like a gray, sliver sludge at the bottom. Now I'm wondering how do I clean it? Or do I have buy a used one. Now I'm aware Pontiac convertibles can be tricky. But I'm hoping y'all would have the answer to my situation. I'm trying to make this car live longer and it's functions to live