Otherwise this is a very handy tool. You put 4 quarts of oil and pressurise to 120 psi...
I used an old DS oil pressure sending unit on which I have silver brazed an adaptor. I made a loop with the oil cooler hose. After opening the valve, the oil came to the oil filter...
After installing the oil filter I saw the oil coming out from the cam shafts. So, everything seem to be good.
I replaced the oiler with a gage and used the starter to get the oil pressure up to see if my oil pump is working properly. I found 35 psi with a cold straight W30. The RTA (French shop manual) calls for 1.5 Bars (21.75 psi) @ 1000 rpm and 5.5 Bars (79.77 psi) @ 6000 rpm (Oil temperature being at 212 degrees F).