Right, don't want to crank it up empty. Just need to know if PS is "ok" to top off canister.You definitely don't want to 'crank it up' empty.... There is a thread already going somewhere here about that exact question. Depending on the year, the fuel pump will cycle with the key (13s, I believe - not your 12). The issue was whether the fuel/PS/etc. poured into the housing gets filtered or not. If I read the threads correctly, the PS would get run through the engine unfiltered.
Of course - VCDS will cycle the pumps for you to purge the air, but it can be done with a jumper in the fuel pump relay instead. There is a how-to posted somewhere if you search for it.
I don't want to have to fill a small bottle or fuel can with a few ounces of Diesel to use as the fluid to top off the canister with. I have PS already, so I would like to know if this is ok to use. TIA!