Update Using Chevron 15w/40 Oil With 2 Quart Top Off - Page 3
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Cadillac DeVille 1985 to 2005 including:
1985-1992 Fleetwood, 1993 Sixty Special, All FWD Forum Discussion, Update Using Chevron 15w/40 Oil With 2 Quart Top Off in Past Cadillac Vehicle Discussion; Again, cheap and the fact that he lets you watch isn't worth a whole lot if he doesn't know what ...
  1. #31
    MoistCabbage's Avatar
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    Again, cheap and the fact that he lets you watch isn't worth a whole lot if he doesn't know what he's doing. Trying to turn head bolts to "check" them can easily CAUSE a failure. Don't feel sorry for him.
    basscatt likes this.

  2. #32
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    Re: Update Using Chevron 15w/40 Oil With 2 Quart Top Off

    Quote Originally Posted by MoistCabbage View Post
    Again, cheap and the fact that he lets you watch isn't worth a whole lot if he doesn't know what he's doing. Trying to turn head bolts to "check" them can easily CAUSE a failure. Don't feel sorry for him.
    -----------------------------------------------
    cheap and the fact that he lets you watch
    isn't worth a whole lot
    if he doesn't know what he's doing.

    I couldn't agree more!


    Trying to turn head bolts to "check" them
    can easily CAUSE a failure.

    ABSOLUTELY - 100% TRUE -

    and ANY "mechanic" who knows ANYTHING about a Northstar motor -
    would flatly REFUSE to even TOUCH head bolts - PERIOD -

    if the head bolts WERE loose -
    "tightening" them WILL certainly tear out
    any remaining threads left in the hole -

  3. #33
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    So then maybe that's why it's eatn more coolant than before? Thought maybe it was that Blue Devil stuff

    But if they were loose to begin with then its inevitable anyways, right?

    I guess time will tell... Think I bought the car with 168k and I'm almost at 200k so hoping it holds out for another couple years

    Thanks for the responses




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    Re: Update Using Chevron 15w/40 Oil With 2 Quart Top Off

    One more time with feeling.

    The head bolts have a thread locker/sealant on them from the factory. That is the "crack" that is heard and felt when breaking them loose. If they where loose, it is because the threads (not the thread locker/sealant) failed. Tightening them is an exercise in futility. If they where not loose, then breaking the thread locker seal will now jeopardize their integrity.

    If you are using coolant and added Blue Devil, the writing is on the wall.

    Any mechanic would be offended to have his "expertise" questioned. That does not mean he fully understands the engine, problem or procedure.

    And You Definitely Won't Find One As Cheap
    Sometimes you get what you pay for.

  5. #35
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    Quote Originally Posted by Ranger View Post
    One more time with feeling.

    The head bolts have a thread locker/sealant on them from the factory. That is the "crack" that is heard and felt when breaking them loose. If they where loose, it is because the threads (not the thread locker/sealant) failed. Tightening them is an exercise in futility. If they where not loose, then breaking the thread locker seal will now jeopardize their integrity.

    If you are using coolant and added Blue Devil, the writing is on the wall.

    Any mechanic would be offended to have his "expertise" questioned. That does not mean he fully understands the engine, problem or procedure.

    Sometimes you get what you pay for.
    I understand what you're saying

    All I use for coolant is distilled water, which is what I used with the Blue Devil

    I jus continue to use distilled water bc I can't stand the smothering smell of coolant coming from the exhaust, Since the 1st day I bought the car.




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    Coolant not only changes the boiling and freeze points of the water, but also contains lubricants and anticorrosive additives. Your cooling system must be a MESS inside!

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    Re: Update Using Chevron 15w/40 Oil With 2 Quart Top Off

    Yeah, IF you intend on repairing and keeping the car, you should have coolant in it, if for no other reason than it's anti-corrosion capabilities.

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    Re: Update Using Chevron 15w/40 Oil With 2 Quart Top Off

    Quote Originally Posted by Ranger View Post
    Yeah, IF you intend on repairing and keeping the car, you should have coolant in it, if for no other reason than it's anti-corrosion capabilities.
    I cant afford 2 gallons of Coolant every day or so

    and wont coolant hurt my hg's???

  9. #39
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    Re: Update Using Chevron 15w/40 Oil With 2 Quart Top Off

    Coolant never hurt a head gasket in any car on earth......... Your HG's are already toast, so nothing you dump in will hurt anything more than the magic sealant you already poured in.

    From your last 4 or 5 posts on coolant and oil it's apparent that your engine is a disaster case ("2 gallons of coolant every day or so") - Either repair the engine (and, because of the Blue Devil I would guess that your engine is NOT repairable) or unload the car and get a decent Hyundai Sonata.

    ............... hard comments, but true.

  10. #40
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    Quote Originally Posted by Submariner409 View Post
    Coolant never hurt a head gasket in any car on earth......... Your HG's are already toast, so nothing you dump in will hurt anything more than the magic sealant you already poured in.

    From your last 4 or 5 posts on coolant and oil it's apparent that your engine is a disaster case ("2 gallons of coolant every day or so") - Either repair the engine (and, because of the Blue Devil I would guess that your engine is NOT repairable) or unload the car and get a decent Hyundai Sonata.

    ............... hard comments, but true.
    Well
    I couldn't jus get rid of it
    I'm well invested into it already

    If my engine is a disaster case, I can only hope it can hold out

    I've seen people do things to these cars trying to kill them, and they went months before giving out, An old girlfriend drove hers for years without changing the oil or doing any maintenance at all... Last I heard it got a flat tire and she jus left it on an interstate up north

    But, At this point there's nothing I could do about the loss of coolant, the more I drive the more it eats

    I've already put the 10w30 oil in the car... Maybe it's to late to do that, I don't know. But it seems to drive the same

    I'd love to Properly Repair the engine and transmission , but I jus don't have the financial resources to do that... Prolly for a couple years

    Yea it sucks, but I can't do anything about that


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    Re: Update Using Chevron 15w/40 Oil With 2 Quart Top Off

    In that case, just keep feeding it water and drive it until it says no more. It will let you know when it won't play any longer. If you are using 2 gallons a day, that won't be too terribly long.

  12. #42
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    Quote Originally Posted by Ranger View Post
    In that case, just keep feeding it water and drive it until it says no more. It will let you know when it won't play any longer. If you are using 2 gallons a day, that won't be too terribly long.
    That sucks

    Guess my days on this forum are numbered too


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  13. #43
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    If you're going to keep the car, plan on spending an additional ~$800-$1,200 when you repair the HGs... the cost of a used engine.

    And you could very possibly be looking at a new radiator and heater core as well.

  14. #44
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    Quote Originally Posted by MoistCabbage View Post
    If you're going to keep the car, plan on spending an additional ~$800-$1,200 when you repair the HGs... the cost of a used engine.

    And you could very possibly be looking at a new radiator and heater core as well.
    Well
    I was actually gonna jus buy one of these $800 Deville's off Cragslist and use the engine and trans outa that while I get mine rebuilt

    http://tampa.craigslist.org/hil/cto/3907960604.html

    That's the plan any who... Gonna take pics of mine after we get it apart to show y'all what damage is done from 15w40 oil and Blue Devil and whatever neglect from the previous 9 owners


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  15. #45
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    My Oil is better than yours...

    (Evil Laugh) Ha ha ha ha ...

    $12 Walmart

    Attachment 124298


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