P-51 coolant

[skyranger]

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

[Bill Greenwood]

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.

[ahramin]

Walmart of all places makes an excellent coolant for aluminium.

https://www.walmart.com/ip/Super-Tech-Antifreeze-Coolant/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.

[Bill Greenwood]

Idoubt if Walmart makes their own coolant , probably made for them by Texaco or someone else. May work the same.
Saturn coolant made by Texaco, GM 1825-M and part number 12378560