Car Oil == Bike Oil?

Discussion in 'UK Motorcycles' started by DannyBoy, Oct 13, 2004.

  1. DannyBoy

    DannyBoy Guest

    Was reading a classic bike mag yesterday.

    It had quite a poor article on oil in it.

    However one startling fact in the article was that most bike oils are
    merely re-branded car oils.

    It seems an odd claim to make if it's not true so I'm assuming the
    author has found this to be true.

    Anyone offer a bike oil that they *know* to be a car oil or a bike oil
    that they know is *not* a car oil?
    DannyBoy, Oct 13, 2004
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  2. DannyBoy

    Zymurgy Guest

    (DannyBoy) wrote

    Zymurgy, Oct 13, 2004
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  3. DannyBoy

    Ovenpaa Guest

    Oh FFS, why did you have to set him off again?
    Ovenpaa, Oct 13, 2004
  4. DannyBoy

    wessie Guest

    Kalico emerged from their own little world to say
    if you look at
    which gives the spec. of Castrol R4 synthetic for superbikes it *only*
    has an API rating of SG. API are up to SL now.

    API=American Petroleum Institute
    Whilst they no doubt know an awful lot about V8 car engines they know
    didly shit about high revving bike engines.

    The Castrol oil jas a JASO MA rating which is the one you need to look
    for (as mentioned in the other oil thread).

    JASO is the Japan Lubricating Oil Society who probably know more about
    high revving engines than the merkins.

    wessie, Oct 13, 2004
  5. Recently rebuilt top end of my GS550 after the valves and seats were
    re-cut by an engineering co. They said only use API SG or before because
    the later stuff is too slippery. Changing to this has definitely fixed the
    problem I was having with the clutch slipping... (There may be other
    reasons besides having a wet clutch, too)

    Just can't understand why SG oil is more expensive than SL, even though
    it's "not as good" :-( (Halfords bike oil £17, car oil £12 ish)
    Matthew Newton, Oct 14, 2004
  6. DannyBoy

    wessie Guest

    Matthew Newton emerged from their own little world to say

    Because they can.
    wessie, Oct 14, 2004
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