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Thread: Strange my deville quit leaking oil

  1. #1
    Italia deville's Avatar
    Italia deville is offline Cadillac Owners Fanatic
    Automobile(s): 1998 deville
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    Strange my deville quit leaking oil

    My deville was leaking round a quart every 2 month last oil change put high milage oil In has been on full every time I check for over 2 months

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    Would high milage stop a leak


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  3. #2
    Italia deville's Avatar
    Italia deville is offline Cadillac Owners Fanatic
    Automobile(s): 1998 deville
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    Re: Strange my deville quit leaking oil

    Can't wrap my head around it

  4. #3
    Trench's Avatar
    Trench is offline Cadillac Owners Fanatic
    Automobile(s): 1991 Eldorado (Gone) ; 2001 Seville SLS (RIP) ; 2005 DeVille
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    Re: Strange my deville quit leaking oil

    Most high mileage oil contains chemical which are supposed to puff up old seals in efforts to stop/slow leaks. You may have gotten lucky and had a leak it was actually able to plug.

  5. #4
    Italia deville's Avatar
    Italia deville is offline Cadillac Owners Fanatic
    Automobile(s): 1998 deville
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    Re: Strange my deville quit leaking oil

    Thanks man


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