Have to replace the reservoir this weekend.

I've read to remove small reservoir hose and put on a clear plastic then put in container and run engine until fluid stops.

Is there a way to gravity drain the system? Just don't want to chance running the pump w/o lubrication. Or is the above method OK?

And, can full synthetic fluid be used instead of the CHF-11S? Or is that more of a gamble and just stick with the 11S?

Thanks