Is coolant coolant?

Discussion in 'UK Motorcycles' started by curium, Nov 16, 2003.

  1. curium

    curium Guest

    Can you use ready to use Castrol car coolant in a motorcycle? Or is there
    something unique about motorcycle coolant systems that necessitates the use
    of a specific type of coolant?
    curium, Nov 16, 2003
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  2. curium

    Petel Guest

    It`ll tell you everything you need to know about Glycol and aluminium

    Then mix it 50/50 with distilled water and be happy:)

    Petel .(air-cooled tractor engine)
    02 M2 Buell.
    Petel, Nov 16, 2003
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  3. curium

    Timo Geusch Guest

    Petel was seen penning the following ode to ... whatever:
    But the other half of the pages tell you to use tap water instead
    because the antifreeze is already formulated to take care of the nasty
    limescale in tap water.

    Alternatively, curium might buy some of the proper stuff - I recommend
    the green Comma X-Stream as it last longer and doesn't cost much more.
    Timo Geusch, Nov 16, 2003
  4. curium

    Pip Guest

    Nah, that's old technology.

    What curium wants is some of this:

    No water, no pressure, no grief.
    Pip, Nov 16, 2003
  5. curium

    Big Tony Guest

    Pip have you actually used this stuff?

    It just concerns me a that its specific heat capacity is a little low. In
    theory this means that more coolant has to be pumped from the engine to the
    radiator in order to achieve the same cooling effect. The table on the
    website indicates that its viscosity is higher and therefore it will require
    more effort to pump it between the engine and radiator. The net effect would
    be a substantial reduction in the amount of heat transfer between the engine
    and radiator.

    Whilst I think that propylene glycol is probably a better product than
    ethylene glycol from the chemical handling point of view I would always add
    the amount the bike manufacturer recommends with the balance being made up
    with water to maintain a decent specific heat capacity and viscosity.

    The only reason I think it works is that maybe bike cooling systems are
    designed with a bit of a margin or they are not used at full throttle all of
    the time.

    I see the various claims they make about better heat transfer but wonder why
    I have never seen these types of claims made by other manufacturers and
    producers of glycol as I design cooling systems for a living [1]. I am
    starting to think snake oil here.

    1. Albeit large commercial and industrial ones.
    Big Tony, Nov 16, 2003
  6. curium

    Cane Guest

    WTF do you know ;)

    cane [at] ¦ fireblade, r30
    botafo t#50 f#03 YTC #15 bbb #6 pm #6 apostle [kotl] flo#12[with bar]
    "Suckling the Mender"
    Cane, Nov 16, 2003
  7. curium

    Timo Geusch Guest

    Big Tony was seen penning the following ode to ... whatever:
    Blimey, we really seem to have an expert for just about everything on
    this newsgroup.

    After reading the webpage (including the smallish print) I must say
    that the needle on the snakeoilometer twitched noticably. I'll stick
    with old technology that works even for me, thanks.
    Timo Geusch, Nov 16, 2003
  8. curium

    Timo Geusch Guest

    Pip was seen penning the following ode to ... whatever:
    But it works. Even for me...
    Timo Geusch, Nov 16, 2003
  9. You need 20 million dollars transferring out of the country, and you're
    offering him a cut?
    The Older Gentleman, Nov 16, 2003
  10. curium

    deadmail Guest

    Well, when I gave the buggers notice they were really snotty with me and
    have cut my old address off, I was thinking I'd keep it as a pay as you
    use number. They didn't give me an option for that and couldn't wait to
    hang up on me.

    deadmail, Nov 16, 2003
  11. curium

    Big Tony Guest

    I am not sure where you get those figures from but you will need about 30%
    more fluid to transfer from engine to radiator to achieve the same amount of
    cooling as for water. As you point out you could run the engine at a 30%
    higher outlet temp, which this stuff should be able to cope with as it's
    boiling point is some 87°C higher at atmospheric pressure. Whether this is a
    good thing or not for the engine I don't know.

    The radiator would be more efficient as the delta T between the fluid and
    the surrounding air is higher but all this means is you could have a smaller
    radiator. This could be useful for GP teams who want to shave every ounce
    off their machines but is a bit OTT for Curium's CB500.
    Big Tony, Nov 17, 2003
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