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Author Topic: Brake Fluid  (Read 288 times)

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Offline DJLSteenkamp

Brake Fluid
« on: October 05, 2017, 10:35:59 am »
Hi All
Need some help on 690 rear brake fluid.
I changed my rear brakes and wanted to change the brake fluid as well. checked in the manual and it says to use DOT 4 and 5.1. Not DOT 5.
On the reservoir it says "use only mineral oil".
Will it cause k@k if I use normal DOT 4 because I have? Flushed out all the old fluid and bled in the new.
In the contained I used to flush out the old with the new, I cant see any difference in the oil (meaning it mixes and does not separate like water and oil).

Should I go and get the correct oil from KTM or will it be fine with the normal DOT 4?
When in doubt, flat out!!!
 

Offline DJLSteenkamp

Re: Brake Fluid
« Reply #1 on: October 05, 2017, 03:07:39 pm »
Nothing? Think everybody has gone home and checked on there reservoir cap and what brake fluid they used.

Think its a good thing.
When in doubt, flat out!!!
 

Offline Pistonpete

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Re: Brake Fluid
« Reply #2 on: October 05, 2017, 06:20:33 pm »
If your manual says Dot 4 or Dot 5.1 then so be it. I always follow spec. :thumleft:
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Offline Welsh

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Re: Brake Fluid
« Reply #3 on: October 05, 2017, 06:29:41 pm »
Find out first or it will fark all your seals but I thought it was only the clutch using mineral?
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Offline Omninorm

Re: Brake Fluid
« Reply #4 on: October 05, 2017, 10:12:29 pm »
Why would you try something else that's not in spec. It's only a few bucks and you can sleep well that your bike has what it needs.
Use what the engineers that designed the bike  recommend you to use. They know best.
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Offline aka.Goliath

Re: Brake Fluid
« Reply #5 on: October 06, 2017, 01:50:41 am »
From what you're saying you used DOT 4, which is what you used (Right?). Then you should be good to go I would imagine. Having just checked it says DOT4/5.1 so I would say you're all good  :thumleft:
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Offline DJLSteenkamp

Re: Brake Fluid
« Reply #6 on: October 06, 2017, 07:28:51 am »
Yes DOT 4 is what I used.
Double checked the manual yesterday and It states DOT 4 and 5.1
I think if the mineral oil was a big thing it would be in the manual as a warning, same as DOT 5

Anyway after changing the fluid the brakes feel better, plan to do a ride this weekend and if back brakes fail I will know that the Mineral oil is a important thing.

Thanks for all the help and advice.
When in doubt, flat out!!!
 

Offline DJLSteenkamp

Re: Brake Fluid
« Reply #7 on: October 10, 2017, 10:12:20 am »
So just a update on the brake fluid.

Spoke to KTM and they are also not sure why the reservoir cap will say Mineral Oil. Mineral oil is only for the clutch.

Filled it with DOT 4 and did a 200km ride and no issues.

Think somehow the cap got changed with the wrong 1.
When in doubt, flat out!!!
 

Offline Welsh

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Re: Brake Fluid
« Reply #8 on: October 10, 2017, 10:20:43 am »
Find out first or it will fark all your seals but I thought it was only the clutch using mineral?

That's what I said.  :lol8:
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