Filling cooling system

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V6: 3.0, 3.2 LA3, 3.6 LY7, 3.6 DI LLT Discussion, Filling cooling system in Cadillac Engine Discussion; Hello, This is probably a stuiped question, but how do I fill my cooling system back up? After I drained ...
  1. #1
    jgcarry is offline Cadillac Owners Member
    Automobile(s): Cadillac
    Join Date
    Feb 2008

    UnhappyFilling cooling system

    This is probably a stuiped question, but how do I fill my cooling system
    back up? After I drained it to put new coolant in it.
    Please Help.:

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  3. #2
    C&C's Avatar
    C&C is offline Cadillac Owners Connoisseur
    Automobile(s): Cadillac XT5 (2017)
    Join Date
    Feb 2008
    Mount Pleasant, SC

    Re: Filling cooling system

    If your car doesn't have a radiator cap, then you usually refill the coolant at the overflow bottle. Adding the coolant slowly will usually result in easier filling by not introducing too much air into the system. When you can't add anymore coolant (the coolant level is at the full mark) you can start your engine, allow it to get up to temperature, let it cool and top off your level. When adding, have an idea about how much the system should require so you'll know that you're no woefully underfilling it (an air bubble may prevent the correct amount to enter the system).

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