Its white, ok well ill get some dow 55 or monkey poo, whats the best out of both or are they the same? I cant find 33 on ebay would it be under molicoyte? Rather than dow? Im only using the stuff thats supplied, i have a massive tub of silicone grease from plumb center, i use it on orings on waste fittings to slide them in easyier would that work? Its a rather sticky lube though
The pics you have supplied show you have dow 55 and the latest version reg.
I would keep the silicone grease away from the drive train of the demon as it would bee too thick and will give you fsdo problems.
In the last picture the 2 grooves either side of the reg adjuster is there for the small grub screw to locate to stop the internal reg from spinning when adjusting input pressure.
Basicly loosen the small grub screw on the hpr body, chrono to desired fps useing the center hex, then screw down the small grub into one of the grooves on the reg base.
if you cant find dow 33 try eclipse grease.
molycote make dow 33