This may sound trivial, but how the heck do I refuel the loader with lubricant? I have lubricant loaded in barrels and place an inserter but all it does it puts barrels on the conveyor.

The solution is probably so simple but I'm actually stuck in trying to figure this one out.

OK nevermind, I figured it out.

But if anyone else stumbles upon this same problem, the loader has a pipe connection, so the lubricant is supplied via pipeline directly to the loader.

Ye, I recommend putting an assembler that unbarrels any barrels of lubricant right next to a bigger line of loaders and let robots deliver the barrels so you don't have to worry about pipe connections at all. Mods like Barreling Machine can make this kinda setup really compact!

Thanks for the reply and the recommendations. I'll check those out right away!