Quote:
Originally Posted by Dixieray53
I need to top off my coolant. Should I just add distilled water until I get to the Cat dealer. Or is there a compatable brand to add with out causing a problem. The Auto Zone guy said I could only use Cat ESL. I am realy confused Help D
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Unless you are desperate never fill a cooling system with plain water. MD and HD Diesel engines that require fully formulated coolants like CAT ELC and similar would experience cavitation pitting increase when you fill low coolant levels with water or even water with antifreeze premixed. Always fill low coolant levels with a premixed coolant containing chemical inhibitors that protect against cavitation pitting of cylinder walls. While CAT would resist the idea, you can refill low CAT ELC coolant with Shell Rotella ELC, Chevron Delo ELC, Shell Ultra, Fleetguard ES Compleat EG Premix, Fleetguard ES Compleat OAT, Old World Fleet Charge, Old World Final Charge. All of these coolants have one specification in common, ASTM D6210. To use any coolant not listing that spec is to use light duty automobile coolant. Something you will regret.
Gary Spires, Field Service Engineer for Cummins/Fleetguard