MBE 900 ENGINE 2007 OPERATOR'S GUIDE Water Requirements Distilled, reverse osmosis-purified, or de-ionized water which eliminates the adverse effects of minerals in tap water is preferred. High levels of dissolved chlorides, sulfates, magnesium, and calcium in some tap water causes scale deposits and/or corrosion resulting in water pump failures and poor heat transfer, leading to overheating. If tap water is used, the mineral content in the water must be below the maximum allowable limits listed in Table 15. All Antifreezes And Coolants Containing Phosphate These coolants are not recommended.
Drop out, overheating and water pump seal failures can result from the use of coolant or inhibitor packages based on phosphate. Automotive Type Coolants These coolants generally contain high levels of phosphate and silicate, offer no liner pitting protection, and are not suitable for use in Detroit Diesel engines. NOTICE: Do not add additional SCA to new, fully formulated antifreeze or coolant. This can result in dropout and/or the formation of deposits. Methyl Alcohol-Based Antifreeze This must not be used because of its effect on the non-metallic components of the cooling system and its low boiling point.
Coolants Not Recommended The following coolants are not recommended for use in Detroit Diesel engines. Table 15 Satisfactory Water Limits – Make-Up Water Only All information subject to change without notice. (Rev. 04/08) 107 DDC-SVC-MAN-0040 0704 Copyright © 2008 DETROIT DIESEL CORPORATION Maximum Allowable Parts per Million Grains per Gallon Chlorides 40 2.5 Sulfates 100 5.8 Total Dissolved Solids 340 20 Total Hardness – Magnesium and Calcium 170 10