BMW K bikes (Bricks)


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blaKey

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I can't believe I'm asking this...what coolant do you use?

BMW has mentioned using silicate/nitrate-free coolant. Some people mention the green stuff. Some people mention the red stuff. Now there's OAT.

I'm not worried about antifreeze (but it does get down to a freezing 9 degrees celsius here in winter...brrr that's cold! Do you have any idea how cold that is? coolant...OAT, green, red, silicate free? Icon_biggrin )

Do you use the red, the green or some other colour?


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Neil
K100RS 1986 RED!

Dress for the ride and the potential slide.
    

Ned

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Niel,

Called Nulon people and asked re: red or green. Green they said after they asked me the year K100 was made.

Red will dissolve your radiator, they said. I don't think so, but the mantra given to the Tech is ask for the year and then give them a colour.

We want a coolant, so I use a 30% pre-diluted and change it every year or so. the book said 40/60 or 50/50, but they are after antifreeze.

Considering the year of manufacture, the only common technology around was the green stuff.

    

blaKey

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Thanks Ned. Too many colours. Green in my old Falcon EL and green in the RS.


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Neil
K100RS 1986 RED!

Dress for the ride and the potential slide.
    

phil_mars

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9 degrees eh? I don't think I will push the point as I think there are some on this forum who experience a tad colder but at least we can still ride in winter. Very Happy
Mind you Mt Tambourine might be a different story from a Qld point of view.
As for antifreeze green seems to do the trick as it hasn't frozen or boiled yet.

Regards

Phil

    

blaKey

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Yea, the 9 degrees remark was to get a rise out of our less fortunate (weather wise) forum buddies! coolant...OAT, green, red, silicate free? Icon_biggrin

The coldest I've been was a mid-winter ride from Brisbane to Warwick on a trusty Triumph 750 Tiger. I had newspaper shoved down the front of my jacket. When I got to my mates place at midnight, I had to hold onto the fence cause my legs were stiff from the cold night air and I would have fallen over otherwise. Jeans don't keep the cold out very well!


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Neil
K100RS 1986 RED!

Dress for the ride and the potential slide.
    

ALEX PITON

ALEX PITON
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hehe live in warwick here got -12 last winter and grew up in stanthorpe, that place is cold. lol. i am running toyota's red stuff in me rs and have the green in my el..., lol nice choice in vechiles i see lol

    

Ned

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here is a good article on the cooling systems and coolants. Please ignore some a few extreme claims and remember that this was written for the colder parts of the planet, but the info is essentially good.

http://www.max-boost.co.uk/max-boost/cooling.htm

As for the colour. I will stick to green although I am sure that red is fine. Also, 30/70 is ok for Sydney where traffic and cooling is the problem.

    

K-BIKE

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My personal feeling is anti-freeze is replaced only every two years so the cost difference of using the genuine BMW stuff is bearable for the small quantity required so I view using the genuine as risk avoidance. Where there is no manufacturer approved product stick in whatever you fancy.
Regards,
K-BIKE

    

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