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Thread: P-51 coolant

  1. #1

    Join Date
    Jul 2011
    Posts
    29

    P-51 coolant

    Curiosity question - what type of liquid coolant is used in P-51 ? Prestone and water maybe !

  2. #2

    Join Date
    Jul 2011
    Posts
    2,410
    Yes, I think most people use Prestone and mix around 50-50 with water, which needs to be clean as drinking water but doesn't have to be distilled. Texaco makes a special antifreeze coolant for Saturn cars which have aluminum blocks and heads, and this coolant is better than Prestone, in theory as the Merlin is mostly aluminum also.

  3. #3

    Join Date
    Aug 2015
    Posts
    16
    Walmart of all places makes an excellent coolant for aluminium.

    https://www.walmart.com/ip/Super-Tec...olant/16645420

    I don't know anything about P-51s but the company that rebuilt my Northstar engine warranties it for 100 000 miles as long as the above coolant is used and changed every 3 years.

  4. #4

    Join Date
    Jul 2011
    Posts
    2,410
    Idoubt if Walmart makes their own coolant , probably made for them by Texaco or someone else. May work the same.

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