Detroit Diesel 60 Series Operator's Manual page 69

4. Maintain the inhibitor at the pre-
scribed concentration. Test the
nitrite concentration by using a titra-
tion kit or Detroit Diesel PowerTrac
3-Way Coolant Test Strips. Add
SCA only if the nitrite concentration
is below 800 PPM. Do not use SCA
in NOAT coolant, and do not use
PowerTrac 3-Way Test Strips to test
NOAT coolant.
NOTE:
If the nitrite concentration exceeds
2,400 PPM, the coolant must be
drained and replaced with new coolant.
A thorough cleaning of the cooling sys-
tem may be required.
5. Do not use another manufacturer's
test kit to measure the SCA concen-
tration of Detroit Diesel Maintenance
Products.
6. Pre-mix coolant makeup solutions to
the proper concentration before
adding to the cooling system.
7. Do not mix NOAT and other
coolants in the same engine.
8. Do not use automotive coolants or
coolants with phosphates.
9. Where antifreeze/boil over protec-
tion is required, use only antifreeze
that meets TMC RP-329 (EG) "type
A" or TMC RP-330 (PG) "type A"
specifications. Always maintain
coolant at the proper level.
10. Coolant Life:
Glycol Coolant. A properly main-
tained cooling system, filled with
phosphate-free coolant consisting
of a 50/50 mix of antifreeze and
water per TMC RP-329 "Type A" or
TMC RP-330 "Type A" can be
operated for the life of the engine,
until overhaul. The proper mainte-
nance involves periodic evaluation
using PowerTrac 3-Way Test Strips
and addition of SCA as needed,
indicated by the strip test. To verify
coolant acceptability, submit a sam-
ple for coolant analysis every three
(3) years, 300,000 miles, (480,000
km), or 5,000 operating hours,
whichever comes first. Submit the
sample in DDC Power Trac Coolant
Test Bottle. Refer to Table 30 in the
Specifications section for part
numbers.
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