Brake Fluid

SKU3410 · Post by **SKU3410** » Tue May 03, 2016 8:04 am

Morning. I need to top up front brake fluid reservoir on our series 3 but unlike the rear, the fluid is blue in colour. Presumably I should match it, any ideas what it is though?
Kev

JEP41 · Post by **JEP41** » Tue May 03, 2016 8:11 am

Hi Kev,

The only blue brake fluid I have seen was Silicone, could somebody have converted yours to silicone brake fluid?

Post by **Heuer** » Tue May 03, 2016 8:17 am

Easy to find out by smell or touch. If in doubt try mixing a drop with water - silicone will separate out immediately.

Post by **mgcjag** » Tue May 03, 2016 8:59 am

Hi Kev...have a look here http://www.advancepetro.com/differentbrakefluid.htm Silicone is a very very pale purple/violate

JagWaugh · Post by **JagWaugh** » Tue May 03, 2016 12:48 pm

Super ATE racing is blue, IIRC, but not Silicone - removes paint like a sandblaster though.

SKU3410 · Post by **SKU3410** » Thu May 05, 2016 5:33 am

Ok thanks for your help. I will carry out a few tests...

chrisfell · Post by **chrisfell** » Thu May 05, 2016 9:07 am

Am I the only one thinking that brake fluid is cheap enough to warrant a complete flush with new? I change mine every two years, no matter what mileage. Even without modified lines on the rear cage it isn't a difficult or time consuming job. And the benefit is that fresh new fluid (DOT5.1 in my case) firms up the pedal and ensures high resistance to heat fade, should I ever find myself descending high mountain passes - like in the Pyrenees later this year.

Post by **Heuer** » Thu May 05, 2016 9:11 am

Indeed buy the OP needs to find out if it is glycol or silicone fluid first. Mixing the two would be bad news!

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