User Manual

HOW-TO SECTION
engines. This dosage is usually
included in the fully formulated
antifreeze used, or it may need to
be added if water alone or if less
than 50% antifreeze is used. The
user is urged to refer to the full
text of this section to determine
the pro per do sage. Mixing
of different manufacturers'
technologies (brands) could cause
cooling system problems.
4. Maintain the inhibitor at the
prescribed concentration. Test
the nitrite concentration by using
a titration kit o r Detroit Diesel
Power Trac 3 -Way Coolant Test
Strips. Add SCA only if the nitrite
concentration is below 900 PPM.
Do not use SCA in OAT coolant,
and do not use Power Trac 3-Way
Coolant Test Strips to test OAT
coolant.
5. Do not use another manufacturer's
test kit to m easu re the SCA
concentration of Detroit Diesel
maintenance products.
6. Pre-mix coolant makeup solu tio ns
to the proper concentration before
adding to the cooling system.
7. Do not mix O AT and other
coolants in the same engine.
8. Do not use auto motive coolants
or coolants with phosphates.
9. Where antifreeze/boil over
protection is required, use only
antifreeze that meets TM C
RP-329 “Type A” (EG) or
TMC RP-33 0 “Type A” (PG)
specifications. Always maintain
coolant at t he proper level.
10. Do not use the following in
Detroit Diesel engine c ooling
systems:
□ Soluble oil
□ High silicate, autom otive-type
antifreeze
□ Chromate SCAs
□ Methoxy propa nol-b ase
coolant
□ Methyl alco hol-base co olan t
□ Sealer additives or coolant
containing sealer additives.
□ HVAC coolant
□ Phosphated coolants
CoolantLifeofGlycol
Coolant: — A properly
maintained cooling system, filled with
phosphate-free coolant consisting of a
50/50 mix of antifreeze and water per
TMC RP-329 “Type A” (EG) or TMC
RP-330 “Type A” (PG) specificatio ns
can be operated for the life of the
engine until overhaul.
112 All information subject to change without notice. (Rev. 01/04)
DDC-SVC-MAN-0058 Copyright © 2004 DETROIT DIESEL CORPORATION