I just got my VacMaster VP230. Yea! So, I put ~9fl oz / 260 ml of the included oil in the oil pump, per the instructions. But the level of the oil did not change at all. The oil level was and still is just visible at the very bottom of the view window. But it's not even close to the 1/2 way mark it is supposed to operate at. I checked for leaks. I jiggled the chamber vac a bit on the table thinking there might be a bubble. Nothing. I let it sit / settle for about 30 minutes, too. Any ideas what might be wrong? I sent a message to Ary tech support, but it was like 5 minutes after their support hours ended for the day.

As a followup if I tilt the chamber vac toward the back up to about a 45 to 60 degree angle, the oil level does move and show about at the half full mark. It goes back to where it was, essentially the empty mark, when I put the front of the unit back down. This is way too much of an angle for operation. But it does seem to indicate there is no bubble. Any ideas are appreciated.