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HOW-TO SECTION
Water Requirements —
Distilled,
reverse osmosis-purified, or
de-ionized water which eliminates
the adverse effects of minerals in
tap water is preferred. High levels
of dissolved chlorides, sulfates,
magnesium, and calcium in some tap
water causes scale deposits and/or
corrosion. These deposits have been
shown to result in water pump failures
and poor heat transfer, resulting in
overheating. If tap water is used, the
mineral content in the water must be
below the maximum allowable limits
listed in Table 24.
NOTICE:
Do not add additional SCA to
new, fully formulated antifreeze or
coolant. This can result in dropout
and/or the formation of deposits.
Coolants Not Recommended
The coolants in the following sections
are
not recommended
for use in
Detroit Diesel engines.
All Antifreezes and Coolants
Containing Phosphate —
These
coolants should be avoided. Drop
out, overheating and water pump seal
failures can result from the use of
coolant or inhibitor packages based on
phosphate.
Automotive Type Coolants —
These coolants generally contain high
levels of phosphate and silicate, offer
no liner pitting protection, and are
not suitable
for use in Detroit Diesel
engines.
Maximum Allowable
Tap Water Components
Parts per Million
Grains per Gallon
Chlorides
40
2.5
Sulfates
100
5.8
Total Dissolved Solids
340
20
Total Hardness –
Magnesium and Calcium
170
10
Table 24 Satisfactory Water Limits
102
All information subject to change without notice.
(Rev. 01/ 04)
6SE550 0401
Copyright © 2004 DETROIT DIESEL CORPORATION