MBE 900 ENGINE 2007 OPERATOR'S GUIDE OAT coolants should not be mixed with conventional coolants. If they are mixed, no damage will result, but the long-life advantages of the OAT coolant will be lost. In this event, the coolant should be maintained as a fully formulated Inhibited Ethylene Glycol (IEG) coolant, not as an Organic Acid Technology (OAT) coolant. Cool 3000) can also be used to protect the engine. Power Cool 3000 concentration limits are listed in Table 14. NOTE: Do not use Power Trac 3–Way Test Strips to test OAT coolant. Detroit Diesel markets a OAT- inhibited ethylene glycol coolant, DDC Power Cool Plus, which contains all the required additives.
If a non-DDC OAT antifreeze is used, it must conform to TMC 338 specification. Do not add extender to new OAT antifreeze or coolant. POWER COOL ® 3000 SCA inhibitors should be mixed at 5% by volume with water. This is 1 quart per 5 gallons of water. These additions can be made by adding liquid SCAs available in a variety of sizes. Coolant filters are also available for different cooling system capacities. These filters release the proper amount of SCA at initial fill. Water Only + SCA or Water Only + OAT Inhibitor In warm climates a coolant based on water with corrosion inhibitors is approved for use. Water-only systems need to be treated with the proper dosage of corrosion inhibitors.
Detroit Diesel-approved SCAs or OAT corrosion inhibitors must be added to the water to provide required corrosion and cavitation erosion protection. OAT inhibitors such as Power Cool Plus 6000 are available for water-only systems. Inhibitor should be mixed at 7.5% – 10% by volume with water. For a list of Power Cool products,refer to section POWER COOL ENGINE PRODUCTS in this guide. Traditional SCA ( Power All information subject to change without notice. (Rev. 04/08) 105 DDC-SVC-MAN-0040 0704 Copyright © 2008 DETROIT DIESEL CORPORATION