The main benefit to not filling the Motive is that it stays clean.
If you put fluid in the Motive it needs to be flushed & cleaned out afterwards.
Definitely suck most of the fluid out of the reservoir with a turkey baster.
The fresh fluid gets through the system without mixing as much with the old.
I keep the Motive dry; suck out the old; & fill the reservoir.
- do one caliper then remove Motive & top up the reservoir. (do NOT let it go dry)
- repeat for each caliper.
No need to use the brake pedal if your brakes are working OK.
If you think you have air (soft pedal), then the old school method with brake pedal helps.
I also tap the caliper with a rubber mallet to dislodge any trapped air bubbles.
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