How much brake fluid is necessary to buy when switching to Castrol SRF?

CanAutM3 · 12-15-2017, 04:42 PM

Quote:

Originally Posted by Ghostriderf80

M fluid boiled at the end of a straight, I thought I was going over the edge into the bush. Really OEM brake fluid?

There are many factors that contribute to how much the brake system is stressed, such as track layout, driving style and use of DSC/MDM/Off.

I drive with DSC off. The tracks I drive require a fair bit of high speed hard braking but also have relatively high average speeds, which promotes better brake cooling. I also avoid over-stressing my brakes all of the time; there is not that much lap time that can be gained from braking. For my conditions, the stock fluid has proven perfectly fine.

m4journey · 12-20-2017, 05:03 AM

Quote:

Originally Posted by CanAutM3

There are many factors that contribute to how much the brake system is stressed, such as track layout, driving style and use of DSC/MDM/Off.

I drive with DSC off. The tracks I drive require a fair bit of high speed hard braking but also have relatively high average speeds, which promotes better brake cooling. I also avoid over-stressing my brakes all of the time; there is not that much lap time that can be gained from braking. For my conditions, the stock fluid has proven perfectly fine.

What pads do you use for your trackdays?

CanAutM3 · 12-20-2017, 05:08 AM

Quote:

Originally Posted by tsangbou

What pads do you use for your trackdays?

Pagid RS29 (now called RSL29).

M4_CaptFlashheart · 12-20-2017, 03:57 PM

Can't fault the RS29, but the stainless brake lines and RBF or similar fluid really does give you extended time on a track which is hard on the braking system and also the pedal feel is slightly firmer with the braided lines, especially once the brakes are hot.

Some people don't go fast enough for brakes to be an issue.

CanAutM3 · 12-21-2017, 06:17 AM

Quote:

Originally Posted by M4 UAV

Can't fault the RS29, but the stainless brake lines and RBF or similar fluid really does give you extended time on a track which is hard on the braking system and also the pedal feel is slightly firmer with the braided lines, especially once the brakes are hot.

Some people don't go fast enough for brakes to be an issue.

And some people brake too much which prevents them from being fast

MasterP · 12-27-2017, 12:11 PM

You can do a complete flush and fill with 1L of fluid.

Save some additional waste by vacuuming out or using some fluid transfer method to get rid of the stock fluid from the reservoir to begin with.

12-20-2017, 03:57 PM	#26
M4_CaptFlashheart Second Lieutenant 227 Rep 269 Posts Drives: M4 2018 Join Date: Aug 2017 Location: uk iTrader: (0)	Can't fault the RS29, but the stainless brake lines and RBF or similar fluid really does give you extended time on a track which is hard on the braking system and also the pedal feel is slightly firmer with the braided lines, especially once the brakes are hot. Some people don't go fast enough for brakes to be an issue. __________________ M4 AY 2016 M4 SMB 2017 M4 Riviera Blue with CCB's 2018
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12-27-2017, 12:11 PM	#28
MasterP Colonel 721 Rep 2,342 Posts Drives: All the M's Join Date: Aug 2012 Location: Where do you want me? iTrader: (8)	You can do a complete flush and fill with 1L of fluid. Save some additional waste by vacuuming out or using some fluid transfer method to get rid of the stock fluid from the reservoir to begin with.
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