porsche3.2

Hi,

What is recommended for Cayenne 3.2 2006?

Thanks

phatz

https://www.amazon.co.uk/ATE-0399016...dp/B003VXRPL0/

porsche3.2

will any brand dot 4 do?

Fred2

Most Dot 4 fluids are pretty similar.
Unless you are racing, I doubt you would see a difference.

The important part is to flush out the old fluid every few years.

porsche3.2

is 1 ltr enough?

phatz

You will find reports of 1 and >1

http://bfy.tw/9SPD

http://bfy.tw/9SPa

mike9186

I've never bled my Cayenne but I have done numerous other cars and always used 2 liters of fluid in my Motive Power bleeder. I want to make extra sure I've replaced the old fluid with new and it always seems like air bubbles keep coming out long after the suggested qty of fluid has been removed.

Brake fluid is cheaper than your time and bleeding brakes, although not hard, isn't the ideal way to spend a Saturday morning.

hahnmgh63

If you're using the Motive Power bleeder (Highly recommended) you shouldn't be getting any bubbles if the system wasn't opened (maybe your fitting/hose on the bleeder nipple. All you should see is dirty fluid coming out until it turns to clean fluid (assuming you are using a clear hose).

nodoors

The mighty vac saves a ton of time too.

hahnmgh63

nodoors, I can tell you from someone that started out with a Might vac that once you use a pressure bleeder you will never use the Mighty vac for the brakes again. I do use my might vac prior to bleeding to mostly empty the resevoir but pressure bleeding is the only way to go and some ABS systems will only bleed with pressure bleeding. It's the way the factories do it.

nodoors

I may give it a shot one day, but once I learned the trick with using a dollop of grease on the threads and nipples (to stop the vacuum from pulling air in between the nipple and tube or threads of the bleeder screw) I have never had an issue from bleeding brakes on a dozen cars to even hydraulic clutches on Italian sportbikes and T56 transmissions.

Is it that it saves you the time of having to go back to the reservoir to keep refilling it or is there some other major advantage you have encountered?

hahnmgh63

Not having to refill the reservoir is part of it but in general brake systems are made to push fluid through them not try to pull/such the fluid out. By pushing the fluid through it is practically impossible for air to get from the bleed valve back into the system so it is a better way to do it. Call your local Porsche dealer and ask them how they do it. They have a fancier machine than the Motive but it is a pressure bleeder.

Fred2

In general, this is a really bad idea.

Hydrocarbons are not compatible with the rubber used in brake master cylinder and caliper seals.

I prefer to avoid the possibility that some may get sucked back into the brake system.

nodoors

I have been doing this for 10+ years and never had an issue. This includes rebuilding several older and newer systems and not just flushes. I would never introduce the grease in the middle of the system, only at the bleeders.

That said, I am always up for a new tool and method.

Is this the one you guys are using?

https://www.amazon.com/Motive-Produc...+power+bleeder

phatz

That is it