Compressor, oiler, water filter regulator not oiling

[vdotmatrix]

It is hard to believe that the oil lvel has not moved in years on this contraption. It also baffles me why I even put stock on any serious working tool from HF. This is a central pneumatic product...

http://images.harborfreight.com/manuals/95000-95999/95439.pdf

similar to this PDF. I think the oil should appear in the watch glass but doesn't...

Anyone ever use one of these?

thanks

[HayZee518]

As you use a tool, oil drips into the line. Its rate depends on the knurled knob's setting.if there isn't a tool connected and operating it won't work. Use compressor oil as it contains an anti-freeze compound.