1997 Caravan 3.0 litre engine, loosing coolant about a quart every 3 months.

Discussion in 'General Motoring' started by xinteerts, Jul 16, 2004.

  1. xinteerts

    xinteerts Guest

    1997 Caravan 3.0 litre engine, loosing coolant about a quart every 3

    Checked the underneat, and inside the cabin under the heater, but no
    visable wetness anywhere. Oil is clean, not white smoke, yet the
    coolant reservior keeps going down.

    75000 miles on the engine, I am running dexcool for GM/s extended
    antifreeze mix.

    Any ideas what';s happening?
    xinteerts, Jul 16, 2004
  2. xinteerts

    Jack Pucci Guest

    Sounds like maybe a head gasket
    Jack Pucci, Jul 16, 2004
  3. xinteerts

    Dave Guest

    Headgasket most likely.
    Dave, Jul 16, 2004
  4. You were doing very well -- perfectly -- up to this point.
    There's your problem. Never use Dex-Cool in any application not
    specifically intended for it. It can very efficiently attack gasket and
    seal materials and incompatible solders, causing system damage that ranges
    from the annoying to the extensive and expensive.

    A likely source of your coolant leak is one or both head gasket(s). They
    can leak such that evidence is very difficult to find. You may want to
    make use of ultraviolet-glow leak detection dye.

    Whatever you determine to be at fault, change back to regular ("green")
    coolant or use Chrysler's newest orange stuff, which is G-O5 -- a premium
    coolant also available in the aftermarket that *does not* attack any
    system materials.

    Daniel J. Stern, Jul 16, 2004
  5. xinteerts

    Bill Putney Guest

    In the Zerex and Havoline brands (possibly others too, but those two are
    the only ones I know of).

    Bill Putney
    (to reply by e-mail, replace the last letter of the alphabet in my
    address with "x")
    Bill Putney, Jul 17, 2004
  6. xinteerts

    Threeducks Guest

    I'm not sure exactly how the 3.0 is laid out. However, on my 3.3L I had
    a leak between the intake manifold and the cylinder head. It was tough
    to track down because the coolant usually evaporated off the intake as
    it leaked out. Eventually with enough looking I was able to catch it in
    the act.
    Threeducks, Jul 17, 2004
  7. xinteerts

    Guest Guest

    Or a water pump, or an "O" ring on the water tube under the intake, or
    the tube itself, or a loose hose clamp on a hardened hose, or a
    slightly pourous core plug, just to mention a FEW of the causes I've
    found on my '88 3.0 New Yorker over the last 10 years.

    It's still loosing about a liter every 3 months, but I'm not looking
    for the cause. At 17 years and 240000+ Km I'm FINALLY going to let the
    "dead horse" lie down, one of these days.
    Guest, Jul 18, 2004
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