I finally have started to get together the parts I am going to need to build a pop tester. I have the hydraulic pump and I sourced a liquid filled 160 bar gauge with a max pressure arm. Now I need to get some of the other stuff. One thing I am having a little problem with is with the fluid reservoir. I would like to find something similar to what mercedes source (no space) uses on their tester http://**************.com/node/5180

That is basically just a plastic reservoir with a fitting on the bottom and a lid on it.

All I have been able to find are some pretty expensive oil reservoirs from McMaster. Does anyone have a source for something like that? I should be able to put the rest together after that. I am using the same sort of hydraulic pump as shown in this thread. I did not want the hassle of modifying a bottle jack. This just seemed so mush easier.