Antifreeze leaking from rear of engine 1987 Allante
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Cadillac Allante Forum Discussion, Antifreeze leaking from rear of engine 1987 Allante in Past Cadillac Vehicle Discussion; When engine is warmed up anti freeze leak s from back and driver side of oil pan. I am told ...
  1. #1
    fjl248 is offline Cadillac Owners Member
    Automobile(s): Cadillac Allantes 1987 & 1992
    Join Date
    Jan 2008
    Location
    Georgia
    Posts
    13

    Antifreeze leaking from rear of engine 1987 Allante

    When engine is warmed up anti freeze leak s from back and driver side of oil pan. I am told it may be coming
    from the expansion (Freeze ) plug on the back (firewall side) of the engine, then collecting on the lip of the oil pan and dripping off in 3 or 4 places. After I stop driving it continues to drip about 2 ounces of fluid; it
    drips while the car is being driven too.
    The car has 142,000 miles. At c. 100,000 mi. I had the dealership remove the engine and replace all 'seals',
    Mechanic says I would have to drop the transmission to get at the 'freeze plugs' which is about 9=10 hours' Could it be anything else?

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  3. #2
    smumfor's Avatar
    smumfor is offline Cadillac Owners Member
    Automobile(s): 89 Allante / 90 Allante
    Join Date
    Jun 2003
    Location
    Jacksonville, FL
    Posts
    19

    Re: Antifreeze leaking from rear of engine 1987 Allante

    If I remember correctly there is a pipe with a short connector hose running around the back of the engine.
    Look at the number 0ne in the first image just after it rounds the corner there was a short piece of heater hose.
    Also those metal pipes rust out..

    Scott

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