Fuel, Oil and Coolant Specifications
DETRIOT DIESEL
Inhibitor
Computability
Corrosion
Complete
Ethylene
*Methoxy
lnhibitor or
Inhibitor
Inhibitor
Glycol
Propanol
Inhibitor System
Type
System
Base
Base
Water
Antifreeze
Antifreeze
Sodium chromate
Chromate
No
Yes
No
No
Potassium dichromate
Chromate
No
Yes
No
No
Perry filter elements:
5020 (type OS)
Chromate
Yes
Yes
No
No
S-453 (Spin-on)
Chromate
Yes
Yes
No
No
5030 (type OS)
@Non-chromate
Yes
Yes
Yes
No
S-331 (Spin-on)
@Non-chromate
Yes
Yes
Yes
No
5070 (type OS)
#Non-chromate
Yes
Yes
Yes
No
S-473 (Spin-on)
#Non-chromate
Yes
Yes
Yes
No
Lenroc filter element
Non-chromate
Yes
Yes
Yes
No
Fleetguard filter elements:
DCA (canister)
Non-chromate
Yes
Yes
Yes
No
DCA (Spin-on)
Non-chromate
Yes
Yes
Yes
No
AC filter elements:
DCA (canister)
Non-chromate
Yes
Yes
Yes
No
DCA (Spin-on)
Non-chromate
Yes
Yes
Yes
No
Luber-Finer filter elements:
LW-4739 (canister)
Non-chromate
Yes
Yes
Yes
No
LFW-4744 (spin-on)
Non-chromate
Yes
Yes
Yes
No
Nalcool 2000 (liquid)
Non-chromate
Yes
Yes
Yes
No
Perry LP-20 (liquid)
Non-chromate
Yes
Yes
Yes
No
Lubercool (liquid)
Non-chromate
Yes
Yes
Yes
No
Dowtherm cooling system conditioner
Non-chromate
Yes
Yes
Yes
Yes
*Dowtherm 209, or equivalent.
@Perry "Year Around" formula.
# Perry "Universal" formula.
Fig. 3
Coolant Inhibitor Chart
Bulk Inhibitor Additives
Commercially packaged inhibitor systems are available which can be added directly to the engine coolant or to bulk
storage tanks containing coolant solution. Both chromate and non-chromate systems are available and care should be
taken regarding inhibitor compatibility with other coolant constituents.
Non-chromate inhibitor systems are recommended for use in Detroit Diesel engines. These systems can be used with
either water or permanent antifreeze solutions and provide corrosion protection, pH control and water softening. Some
non-chromate inhibitor systems offer the additional advantage of a simple on-site test to determine protection level and,
since they are added directly to the coolant, require no additional hardware or plumbing.
All inhibitors become depleted through normal
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