DETROIT DIESEL 53
Fuel, Oil and Coolant Specifications 13.3
COOLANT INHIBITOR CHART
Inhibitor Compatability
Corrosion
Ethylene
Complete
Inhibitor or
Inhibitor
Inhibitor
Glycol Base
Inhibitor System
System
Water
Antifreeze
Type
Sodium chromate
*Chromate
No
Yes
No
Potassium dichromate
*Chromate
No
No
Yes
Perry filter elements
*Chromate
5020 (Type OS)
No
Yes
Yes
S-453 (Spin on)
No
*Chromate
Yes
Yes
5030 (Type OS)
Yes
@ Non-chromate
Yes
Yes
S-331 (Spin on)
Yes
@ Non-chromate
Yes
Yes
5070 (Type OS)
Yes
# Non-chromate
Yes
Yes
# Non-chromate
S-473 (Spin on)
Yes
Yes
Yes
Yes
Lenroc filter element
Non-chromate
Yes
Yes
Fleetguard filter elements
Non-chromate
Yes
Yes
Yes
DCA (Canister)
DCA (Spin on)
Non-chromate
Yes
Yes
Yes
AC Filter elements
Non-chromate
Yes
Yes
DCA (Canister)
Yes
Non-chromate
Yes
Yes
DCA (Spin on)
Yes
Luber-Finer filter elements
Non-chromate
Yes
LW-4739 (Canister)
Yes
Yes
LFW-4744 (Spin on)
Non-chromate
Yes
Yes
Yes
Nalcool 2000 (Liquid)
Yes
Non-chromate
Yes
Yes
Liquid Perry (LP-20)
Non-chromate
Yes
Yes
Yes
Lubercool (Liquid)
Non-chromate
Yes
Yes
Yes
@ Note 1 - Perry "Year Around" formula.
# Note 2 - Perry "Universal" formula.
Figure B
filter elements, liquid and dry bulk inhibitor additives
magnesium lower support plate used by some
and as an integral part of permanent antifreeze.
manufacturers in their coolant filters. The magnesium
plate will be attacked by solutions which will not be
COOLANT FILTER ELEMENTS: Replaceable ele-
detrimental to other metals in the cooling system. The
ments are available with various chemical inhibitor
dissolved magnesium will be deposited in the hottest
systems. Care should be used in the selection of
zones of the engine where heat transfer is most critical
elements relative to inhibitor compatibility with
(Figure C). The use of aluminum or zinc in preference
coolant solutions shown in Figure B.
to magnesium is recommended to eliminate this type
Problems have developed from the use of the
of deposit.
SEC. 13.3 Page 5
April, 1974
