The MGA With An Attitude
Effect Of Antifreeze On FREEZING And BOILING - CO-101B
This data was taken from the side of a bottle of Prestone antifreeze, the traditional Etylene-Glycol type. The first chart on freezing points is based on a 1.5 gallon cooling system, approximately equal to the capacity of the MGA system without the heater.
EFFECT OF ANTI FREEZE ON FREEZING POINT
IN 1.5 GALLON SYSTEM |
Pints
Added |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
% of
Solution |
8.3% |
17% |
25% |
33% |
41% |
50% |
58% |
Freezing
Point |
26° F |
19° F |
10° F |
0° F |
-15° F |
-34° F |
-57° F |
| EFFECT OF ANTI FREEZE ON BOILING POINT |
System
Pressure |
0 PSI |
4 PSI |
8 PSI |
12 PSI |
16 PSI |
20 PSI |
24 PSI |
Plain
Water |
212° F |
225° F |
233° F |
242° F |
252° F |
260° F |
265° F |
33%
Solution |
220° F |
230° F |
240° F |
253° F |
260° F |
268° F |
273° F |
44%
Solution |
224° F |
234° F |
245° F |
257° F |
265° F |
272° F |
279° F |
50%
Solution |
226° F |
236° F |
248° F |
259° F |
267° F |
275° F |
280° F |
60%
Solution |
231° F |
241° F |
253° F |
264° F |
273° F |
280° F |
285° F |
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