<strong>Yahoo Message Number: 6317</strong>In response to a question about coolant filters, I received the following message from Cummins...<br/><br/>"Please refer to page V-21 through V-24, of the ISL Operation & Maintenance manual, for the information on coolant and filters. It states that SCA concentration should be 1.2 units per gallon minimum and 3.0 units per gallon maximum. Your coolant...