General topics » Clutch fluid.

As we all know, the clutch fluid is a mineral oil, specifically (I think) Vitamol V10 although this comes from the Haynes manual as I can find no reference in the BMW owners manual. Having just had to re-route the clutch cable to fit some bar risers, I re-fitted the cable to the master cylinder and removed the cover for the fluid reservoir. This was to do the normal getting the bubbles out of the master cylinder by pumping the lever. This worked fine, as usual, and a satisfying little stream of small bubbles appeared. During this process, a very small amount of fluid was lost, not much but I would quite like to top it up a little bit and to have some spare fluid in stock for the future.
The trouble is, I cannot find a supplier anywhere! The fluid is made by Castrol I think and I have no doubt that my local dealer will have some, so probably not a big problem. However, does anyone know where I can get some without going to be fleeced by the dealer? I have searched the usual sources and the internet but with no luck.

Not sure where you are from but over here in the UK I would use DOT 4 as my goto fluid for both brake and clutch. I think we all get hung up on the exact specifications for engine fluids etc told to us by manufactures when it truth it is just marketing hype, so long as you use a good grade oil (correct viscosity) brake and clutch fluids, you are not going to do any long term damage to your bike.

Wessie, thanks for the info. I do have some Citroen LHM fluid and did consider that as an option but think it would be unwise to take the risk. I have also read about the Magura mineral fluid that is used in KTM hydraulic clutches. As my bike is still under warranty, I would again prefer to get the right stuff and so may just have to go to the dealer if no other supplier is available.

Firebird 1. I am also in the UK, in Suffolk (I have not got around to filling in the personal details bit). As with Citroen oleo-pneumatic hydraulic systems that use their LHM fluid, if you use non-mineral oils like DOT4 'ordinary' brake fluid, you will destroy all the seals! Very expensive and so not a good idea! Some other hydraulic clutches do use normal brake/clutch fluid like DOT4, as does my VFR for instance, but these BMW ones don't. You need to check.

Wenn Sie hier auf Links zu eBay klicken und einen Kauf tätigen, kann dies dazu führen, dass diese Website eine Provision erhält.

did you try on ebay?

Werbung: https://www.ebay.it/itm/Kupplungsflussig...iAAAOSwqj5bZDcx

I get Mineral Oil from the Drug Store/Apothecary.

Zitat von Phinj im Beitrag #7

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I get Mineral Oil from the Drug Store/Apothecary.

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Caster oil tastes horrible.. I am sure my mother gave it to me when I was young.

Then again, it may have been cod-liver oil.

Hard to remember after all these years...

I stand corrected and I do agree with the post that BMW have created another solution to something that other manufactures don't have.

You are right to use the Vitamol V10, but I don't think that You will destroy the wires and seals... It probably has different denisty and viscosity. I have the service manual for the K54 and it says with capital letters to use the above oil.

Very common among mountain bike and road cyclists. Look up Magura mineral oil and pick a quantity that you want. This is exactly the same stuff used by BMW.

Clicky

Thanks for all the responses.

I will just have to stump up for the BMW stuff from a dealer I think. The bike is still under warranty and I don't want to cause any problems. The Magura fluid I have seen on line seems to be a different colour from the stuff in my bike. If doing a fluid change in the future, I would certainly seek out the Magura though.

KTM use oil in theirs perhaps have a look at what they use