Clutch bleed apprehension

THE BULL

It's because of this issue why most of the bleeds fail.
Almost nobody cleans the reservoir first, even if it's micro debris you're still trying to pump it through a seals in a cylinder and through a slave cylinder that also uses seals that are fragile when debris is present.

Emptying the reservoir first could buy you a year or two.

A fluid exchange is just that, however by forcing old fluid down the line you're essentially doing the same as a transmission flush for automatics which is now standard knowledge to stay away from and in the clutch systems for these cars is definitely something you want to keep in top shape, after all the system is not complicated at all just sensitive for debris like most hydraulic systems.

A gravity bleed will be the least intrusive way to get this done. If you are extremely worried about the "old fluid" still trapped in the chamber you can change the fluid, pump the pedal a few times and then change the fluid again for additional assurance.

PS: most of this debris comes from the clutch reservoir hose that's been documented as the main fault of debris due to how it the brake fluid over time starts to melt the hose inside out.
Some members change the hose with an OEM replacement, others use Motorcycle hoses which work wonderfully.

Either way properly cleaning and keeping this system clean WILL extend it's life

Good luck!