x2 on the Motive. Best tool for the job. Pressure bleeders do a far better job than vacuum bleeders, and are easier to use.

Tip: use a turkey baster or similar to suck all the old fluid out of the reservoir first, then fill the reservoir with clean new fluid, then go about your brake bleeding. The fluid in the reservoir will be more contaminated with moisture than the fluid in the rest of the system. Better to change it for new clean fluid before forcing it all the way through the system.

Precisely. Vacuum booster only provides mechanical assistance with pushing the brake pedal. It has absolutely zero affect on the brake fluid system. Therefore, there is no benefit to leaving the car running while you perform a brake bleed. Don't do it.

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'98 E300 turbodiesel

OK, so I found the new Motive unit was waiting for me in its box when I got home (from out of town) tonight. Jumped straight into it. As soon as I started pumping up the PSI, one of the little black caps on top of the BF reservoir started leaking from a fairly big crack in it. Do I have to buy the whole reservoir unit, or can I buy one of the small black caps (probably two)?

Simon

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Simon Shearer

1986 420SEL

2000 Porsche 911 Millenium Edition Carrera 4
2010 Lexus RX 350
2002 Kia Rio
2002 Hyundai Accent

Black Protective caps:
A001 431 26 87 Girling
A000431 90 87 Teves

Motive mentions 10-15 PSI in their info I think. When you finally get to this you only need a couple pounds of pressure, 5 PSI works fine just a little slower. Too much pressure can pop the reservoir off the master cylinder of some cars.