DETROIT DIESEL 53
13.3 Fuel, Oil and Coolant Specifications
TABLE 1
GRAINS PER
PARTS PER
GALLON
MILLION
2.5
40
Chlorides (Maximum)
5.8
100
Sulfates (Maximum)
20
340
Total Dissolved Solids (Maximum)
170
10
Total Hardness (Maximum)
Refer to Table 2 for evaluation of water intended for use in a coolant solution.
TABLE 2
Figure A
chemical compounds which provide corrosion protec-
protection in the cooling system with the basic
tion, pH control and water softening ability. Corrosion
advantage that they can be used with either water or a
water and ethylene glycol solution.
protection has been discussed earlier under the section
on Corrosion Inhibitors. The pH control is used to
maintain an acid free solution. The water softening
INHIBITOR SYSTEMS
ability deters formation of mineral deposits. Inhibitor
systems are available in various forms such as coolant
An inhibitor system is considered as a combination of
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