Hi guys. While changing out powesteering fluid and diff oil this morning, I noticed 1 more fluid tank. It says zh-m hydrolic fluid on it. I searched mbforums and it is fluid for self leveling suspension. My qestion is, should I suck it out with oil extractor and put new in(lets say next 3 oil changes), or should I better go and let the shop fully drain and replace? Also does anyone know what cost of that fluid at stealer? Parts geek has it for around $18 per liter delivered