How To Select Coolant; Definitions; Antifreeze; Coolant - Detroit Diesel 50 Series Operator's Manual

HOW-TO SECTION
tighten the vent cap quickly by
hand.
NOTE:
If the engine fails to start after
replacement of fuel filters, the fuel
system will require priming with tool
J 5956, or equivalent. Authorized
Detroit Diesel distributors are properly
equipped to perform this service.

How to Select Coolant

The section coves selection of the
required coolant for Series 50 engines.

Definitions

This section covers selection of
the required coolant for Series 50
engines. To help ensure complete
understanding of the information, the
definitions of the following terms are
provided:
Antifreeze — Ethylene glycol
or propylene glycol containing a
corrosion inhibitor package and which
meets an appropriate heavy-duty
specification (i.e., TMC RP-329 for
ethylene glycol or TMC RP-330 for
propylene glycol).
Coolant — The fluid mixture
circulating in the engine cooling
system, typically a mixture of 50%
water and 50% antifreeze.
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6SE550 0401 Copyright © 2004 DETROIT DIESEL CORPORATION
Drop-Out — Precipitated sludge or
deposit formation on cooling system
components.
Fully Formulated Antifreeze —
Contains all the necessary inhibitors
to protect a diesel engine, and does
not, therefore, require a pre-charge of
SCA before its first use.
Initial–Fill Coolant — The coolant
that is used in a new or rebuilt engine,
or any time the cooling system is
emptied and then refilled with coolant.
OAT — Organic Acid Technology. An
inhibitor system based on organic acid
inhibitors, instead of traditional North
American inhibitor formulations.
SCA — Supplemental Coolant
Additive. SCAs are used in a
preventive maintenance program to
prevent corrosion, cavitation, and the
formation of deposits.
All information subject to change without notice. (Rev. 01/ 04)