Detroit Diesel MBE 4000 Service Manual page 397

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Failure to properly maintain coolant with SCA can result in
damage to the cooling system and its related components.
Conversely, over-concentration of SCA inhibitor can result in
poor heat transfer, leading to engine damage. Always maintain
concentrations at recommended levels. Do not use traditional
SCAs with NOAT coolant.
The proper application of SCA will provide:
pH control
Restored inhibitor levels to prevent corrosion
Water-softening to deter formation of mineral deposits
Cavitation protection to protect wet sleeve cylinder liners
5.3.4
Recycled antifreeze that complies with TMC RP-329 Type "A" (for ethylene glycol) is approved
for use in MBE 4000 engines. The antifreeze must be recycled by distillation, reverse osmosis,
or ion exchange.
Other recycled antifreeze, especially any antifreeze recycled by means of filtration processes,
is not approved.
5.3.5
Corrosion inhibitors are very important in maintaining engine life. All corrosion inhibitors protect
against corrosion caused by acid, and cavitation of wet cylinder liners. SCAs also protect against
mineral deposits.
The concentrations of some inhibitors will gradually diminish during normal engine operation. To
protect the engine, nitrite concentration must be checked at regular intervals, and inhibitors added
as necessary. The intervals are longer if NOAT inhibitors are used.
All information subject to change without notice.
6SE412 0403 Copyright © 2004 DETROIT DIESEL CORPORATION
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Recycled Antifreeze
Corrosion Inhibitors
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NOTICE:
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MBE 4000 SERVICE MANUAL
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