User Manual

SERIES 50 OPERATOR'S GUIDE
tap water is preferred. High levels
of dissolved chlorides, sulfates,
magnesium, and calcium in some tap
water causes scale deposits and/or
corrosion. These d eposits have been
shown to result in water pum p failures
and poor heat transfer, resulting in
overheating. If tap water is used, the
mineral content in the water m ust be
below the maximum allowable li mi ts
listed in Table 24.
NOTICE:
Do not add additional SCA to
new, fully formulated antifreeze or
coolant. Th is 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
DetroitDieselengines.
All Antifreezes and Coolants
Containing Phosphate — These
coolants should be avoided. Drop
out, overheating and water pum p seal
failures can result from the use of
coolant or inhibitor packages based on
phosphate.
Automotive Ty pe 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 Dissolve d Solids
340 20
Total Hardness –
Magnesium and Calcium
170 10
Table 24 Satisfactory Water Limits
All information subject to change without notice. (Rev. 01/04) 103
DDC-SVC-MAN-0058 Copyright © 2004 DE TROIT DIESEL CORPORATION