• Acetone
• Ammonia
• Boron
• Ethanol
• Formates
• Glycolates
• Ketones
• Nitrate
• Nitrite
• Phenols
• Phosphorus
• Silicon
• Toluene
Other recycled coolants, especially coolants recycled through filtration processes,
are not recommended.
Coolants Not Permitted
The following coolants are not to be used in Detroit™ Gen 5 Heavy Duty engines :
• Automotive/Passenger car-type coolants must not be used because they offer no
liner pitting protection. Also, these types of coolants generally contain high
levels of phosphates and silicates.
• Methyl alcohol-based coolant must not be used because of its effects on the
nonmetallic components of the cooling system and its low boiling point.
• Methoxy propanol-based coolant must not be used because it is not compatible
with fluorocarbon elastomer seals found in the cooling system.
• Glycol-based coolants formulated for Heating/Ventilation/Air Conditioning
(HVAC) must not be used. These coolants generally contain high levels of
phosphates, which will form deposits on hot internal engine surfaces, reduce heat
transfer, and cause water pump seal leaks.
• Waterless-type coolants must not be used.
• Nitrite Organic Acid Technology (NOAT) must not be used because engine
components can become more vulnerable to failure.
Non-Formulated Additives Not Permitted
The following additives should not be used in Detroit™ Gen 5 Heavy Duty
engines :
• Soluble Oils: Soluble oil additives are not approved. A small amount of oil
adversely affects heat transfer. For example, a 1.25% concentration of soluble oil
increases the fire deck temperature 6%. A 2.5% concentration increases the fire
deck temperature 15%. The use of soluble oil additives may result in engine
overheating and/or failure.
How to Procedures
70
All information subject to change without notice.
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