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Coolant Selection Chart

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Coolant Selection Chart

Coolant
Type
Appearance
Color
Usable Temp
Range (°F)
Specific Heat
(Btu/lb/°F)
@100°F
Specific
Gravity
@100°F
Viscosity
CS/SSU
@100°F
K for
P=F×ΔT×K&
@100°F
Water
-
Clear
35 to 212
0.997
0.9931
.7/6
146
Air 1
-
-
-
0.240
0.075 2
-
0.316
Ethylene Glycol
40% Water 60%
4
Clear 5
0 to 220
0.855
1.042
1.8/32
131
Ethylene Glycol
50% Water 50%
4
Clear 5
-30 to 225
0.82
1.055
2.2/33.5
127
Ethylene Glycol
60% Water 40%
4
Clear 5
-66 to 235
0.76
1.066
3.0/36
119
Propylene Glycol
40% Water 60%
4
Clear 5
10 to 206
0.92
1.021
2.3/33.5
138
Propylene Glycol
50% Water 50%
4
Clear 5
-25 to 210
0.862
1.027
3.2/36.8
130
Propylene Glycol
60% Water 40%
4
Clear 5
-50 to 217
0.825
1.03
4.5/41
125
PAO
Poly-alphaolefin
Clear
-55 to 265
0.54
0.783
5.4/43
62
Coolanol 20R
Silicate Ester
Clear
-100 to 300
0.465
0.88
2.1/33
60
Coolanol 25R
Silicate Ester
Clear
-60 to 300
0.45
0.882
4.8/41
58
Coolanol 35R
Silicate Ester
Clear
-30 to 400
0.465
0.875
7.5/51
60
DC-200 3
Dimethyl
Silicon Fluid
Clear
-90 to 390
0.41
0.872
2.0/32.6
53
Dowtherm J
Aromatic Oil
Clear
-70 to 358
0.45
0.85
.6/6
56
Dowtherm G
Aromatic Oil
Amber
40 to 575
0.387
1.09
8.19/53
62
Diala AX 7
Univolt 33
Mineral Oil
(Transformer)
Amber
30 to 310
0.44
0.874
10.2/60
57
Marcol 87 (CS)
Mineral Oil
(White Oil)
Clear
30 to 310
0.44
0.84
16.8/84
54
MIL-H-5606
Mineral Oil
(Hydraulic)
Red
30 to 475
0.44
0.85
13.3/70
55
Fluorinert
FC75/FC77/FC104
Fluoro-Carbon
Clear
-120 to 210
0.25
1.75
.63/6
64
All Data Is Approximate - Not Responsible For Errors Or Omissions.
All properties at 100F unless otherwise noted.

1 Values given at sea level, 70F.
2 Density in lb/ft³.
3 DC-200 is a brand name covering a family of coolants of various viscosities. Properties are those of a light grade: 2 centistokes at 25C (77F).
4 Special inhibitors may be required. Consult factory.
5 Commercial anti-freeze may be colored.
6 Below range of scale.
7 Values given at 60 F.

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