I have a 1994 G320 SWB with a m104 engine. I has a manual swap from the previous owner done horribly by a mechanic who had no right to be working on an old G class. That being said, after a long restoration I have come to the point of repairing the diff lock system. I noticed I have no fluid reservoir in the engine bay (maybe removed by said mechanic) the found a degraded line heading to the top of rear intensifiers. Should I have an additional reservoir or does the system run off the brake fluid reservoir? Picture of engine bay attached. 


